您要找的是不是:
n. 浮在葡萄酒表面的一种白色酵母
n. [木工]补强板条
[f?(r); strong form f?:(r)]
[f?; strong form f?r]
prep. 为，为了；因为；给；对于；至于；适合于
conj. 因为
强迫停运率 (forced outage rate)
&2,447,543篇论文数据，部分数据来源于
FOR may refer to
以上来源于:
SAYING WHO OR WHAT SOMETHING RELATES TO, OR WHO BENEFITS
If something is for someone, they are intended to have it or benefit from it. 为
Isn't that enough for you?
那对你来说不够吗？
...a table for two.
…一张双人桌。
He wanted all the running of the business for himself.
他想要自己管理整个企业。
If you work or do a job for someone, you are employed by them. 为… (工作)
I knew he worked for a security firm.
我知道他为一家保安公司工作。
Have you had any experience writing for radio?
你有为电台撰稿的经验吗？
If you speak or act for a particular group or organization, you represent them. 代表 (某团体或机构)
She appears nightly on the television news, speaking for the State Department.
她每晚出现在电视新闻上，代表国务院发言。
If someone does something for you, they do it so that you do not have to do it. 替… (做事)
If your pharmacy doesn't stock the product you want, have them order it for you.
如果药房没有你所要的产品，让他们替你订货。
I hold a door open for an old person.
我替一位老人把门开开。
If you feel a particular emotion for someone, you feel it on their behalf. 替… (感到)
[adj/n PREP]
This is the best thing you've ever done – I am so happy for you!
这是你做过的最好的事–我真为你高兴！
If you feel a particular emotion for someone or something, they are the object of that emotion, and you feel it when you think about them. 对… (常怀有某种感情)
[adj/n PREP]
John, I'm sorry for Steve, but I think you've made the right decisions.
约翰，我为史蒂夫感到难过，但我想你作出了正确的决定。
You use for after words such as "time," "space," "money," or "energy" when you say how much there is or whether there is enough of it in order to be able to do or use a particular thing. 供…使用
Many new trains have space for wheelchair users.
许多新火车都为坐轮椅者留有空间。
...a huge room with plenty of room for books.
…可存放大量书籍的一间大屋子。
You use for when you make a statement about something in order to say how it affects or relates to someone, or what their attitude to it is. 对…来说
What matters for most scientists is money and facilities.
对大多数科学家来说，重要的是经费和设备。
For her, books were as necessary to life as bread.
对她来说，书就像面包一样是生活的必需。
After some adjective, noun, and verb phrases, you use for to introduce the subject of the action indicated by the following infinitive verb. 用于某些形容词、名词或动词词组之后，引出动词不定式的执行主语
[PREP n to-inf]
It might be possible for a single woman to be accepted as a foster parent.
有可能接受单身女子做养母。
I had made arrangements for my affairs to be dealt with by one of my children.
我安排了自己的一个孩子处理我的事务。
If you say that something is not for you, you mean that you do not enjoy it or that it is not suitable for you. 不被…喜欢; 不适合
[with neg]
Wendy decided the sport was not for her.
温迪认定这项运动不适合她。
If it is for you to do something, it is your responsibility or right to do it. 由… (负责)
[PREP n to-inf]
I wish you would come back to Washington with us, but that's for you to decide.
我希望你和我们一起回华盛顿，但由你自己决定。
For is the preposition that is used after some nouns, adjectives, or verbs in order to introduce more information or to indicate what a quality, thing, or action relates to. 用于某些名词、形容词或动词之后，引出更多信息或指出相关的性质、事物、行为等
Reduced-calorie cheese is a great substitute for cream cheese.
低卡路里干酪是奶油干酪的极好替代品。
Parking lot owners should be legally responsible for protecting vehicles.
停车场场主应该依法负责保护车辆。
If a word or expression has the same meaning as another word or expression, you can say that the first one is another word or expression for the second one. (意思) 相当于
The technical term for sunburn is erythema.
晒斑的专业术语是红斑病。
To be named for someone means to be given the same name as them. 以… (命名)
[美国英语]
The Brady Bill is named for former White House Press Secretary James Brady.
布雷迪法案是以前白宫新闻秘书詹姆斯·布雷迪命名的。
You use for in a piece of writing when you mention information which will be found somewhere else. 至于… (用于指可以在文中其它地方找到的信息)
For further information on the life of William James Sidis, see Amy Wallace, "The Prodigy."
要了解更多关于威廉·詹姆斯·西迪斯的生平，参阅艾米·华莱士的《神童》。
For is used in conditional sentences, in expressions such as "if not for" and "were it not for," to introduce the only thing which prevents the main part of the sentence from being true.
If not for John, Brian wouldn't have learned the truth.
要不是约翰，布莱恩不会了解真相。
The earth would be a frozen ball if it were not for the radiant heat of the sun.
要是没有太阳的辐射热，地球将会是一个冰冻的球体。
MENTIONING A PURPOSE, REASON, OR DESTINATION
You use for when you state or explain the purpose of an object, action, or activity. 为了 (表示目的、用途)
[PREP n/-ing]
...drug users who use unsterile equipment for injections of drugs.
…用未消过毒的器具注射毒品的吸毒者们。
The knife for cutting sausage was sitting in the sink.
用于切香肠的刀在水槽里。
You use for after nouns expressing reason or cause. 因为 (作介词，用于表示原因的名词后)
[n PREP n/-ing]
He's soon to make a speech explaining his reasons for going.
他很快将会发表讲话说明去的原因。
The county hospital could find no physical cause for Sumner's problems.
县医院查不出萨姆纳的问题的生理原因。
If something is for sale, hire, or use, it is available to be sold, hired, or used. 供 (销售、租用、使用)
Freshwater fish for sale.
供出售的淡水鱼。
...a room for rent.
…一间供租用的房间。
If you do something for a particular occasion, you do it on that occasion or to celebrate that occasion. 为 (某场合)
He asked his daughter what she would like for her birthday.
他问他女儿想要如何过她的生日。
If you leave for a particular place or if you take a bus, train, plane, or boat for a place, you are going there. 前往 (某地)
They would be leaving for Rio early the next morning.
他们次日一早将前往里约。
BEFORE NUMBERS, AMOUNTS, AND TIMES
You use for to say how long something lasts or continues. 用于表示持续的时间
[PREP amount]
The toaster was on for more than an hour.
烤箱开了一个多小时。
They talked for a bit.
他们谈了会儿。
You use for to say how far something extends. 用于表示延伸的距离
[PREP amount]
We drove on for a few miles.
我们继续开了几英里。
If something is bought, sold, or done for a particular amount of money, that amount of money is its price. 以 (某数量的钱)
[PREP amount]
We got the bus back to Tange for 30 cents.
我们以30美分乘公共汽车回到了坦格。
The Martins sold their house for about 1.4 million dollars.
马丁一家以约一百四十万美元把他们的房子卖了。
If something is planned for a particular time, it is planned to happen then. 于 (某时间)
...the Baltimore Boat Show, planned for January 21 – 29.
…计划于1月21至29日举行的巴尔的摩船展。
The designer will be unveiling her latest fashions for autumn and winter.
该设计师将公布她的最新款秋冬时装。
You use expressions such as for the first time and for the last time when you are talking about how often something has happened before. 首次/最后一次
He was married for the second time.
他第二次结婚了。
You use for when you say that an aspect of something or someone is surprising in relation to other aspects of them. 对…来说
He was tall for an eight-year-old.
对一个8岁的孩子来说他长得很高。
You use for with "every" when you are stating a ratio, to introduce one of the things in the ratio. 对于 (与every连用，用于引出比率中之一)
For every farm job that is lost, two or three other jobs in the area are put at risk.
对于失去的每份农场工作，该地区的其它两三个工作就会被置于危险中。
You can use for in expressions such as dollar for dollar or mile for mile when you are making comparisons between the values or qualities of different things. 对应 (用于比较不同事物间的价值或品质)
[n PREP n]
...the Antarctic, mile for mile one of the planet's most lifeless areas.
…每英里都是地球上最无生命的地区之一的南极洲。
WANTING OR SUPPORTING
If you say that you are for a particular activity, you mean that this is what you want or intend to do. 想要
Right, who's for a toasted sandwich then?
好了，那谁想要一个吐司三明治呢？
If you are for something, you agree with it or support it. 赞成; 支持
Are you for or against public transportation?
你是支持还是反对公共交通？
You use for after words such as "argue," "case," "evidence," or "vote" in order to introduce the thing that is being supported or proved. 支持
[n/v PREP n]
Another union has voted for industrial action in support of a pay claim.
又一个工会已投票赞成支持加薪要求的劳工行动。
The case for nuclear power is impressive.
支持核能的论据令人印象深刻。
For is also an adverb. 支持地
[ADV after v]
833 delegates voted for, and only 432 against.
833名代表投票支持，只有432人反对。
If you say that you are all for doing something, you agree or strongly believe that it should be done, but you are also often suggesting that other people disagree with you or that there are practical difficulties. 完全赞成; 极力支持
He is all for players earning what they can while they are in the game.
他完全赞成运动员在役期间能赚多少钱就赚多少。
尽管；虽然
关于，至于
打算；在选举中被提名；在法庭受审；被关押
举个例说；作为其中一个
毁坏；代替；对…有效
从事；免不了遭受
去找；被认为；主张；拥护；努力获取
参加，从事；追求；赞成
就…而论；据…；至于
更多收起词组短语
For a gender field, consider which set of values is readily understood: M/F or 0/1?
对于性别字段，考虑哪组值容易理解：M/F 还是 0/1？
After cooking meat and poultry on the grill, keep it hot until served -- at 140 F or warmer.
食物煮熟后，使其保持热的状态直到上菜时——华氏140度或以上。
If you select a specific form, only accounts with currency conversion codes E, F or G that are included in this form will be displayed.
如果您选择一个特定表单，则只显示带有该表单中包含的货币转换码 E、F 或 G 的账户。
F.A.O.officials say the general ideas for an international agreement or treaty are now largely in place.
VOA: special.
But luckily we don't have to worry about how we're going to picture all this, now that I said that, no physical interpretation f or a wave function, there is a physical interpretation for what a wave function squared means.
如何想象这些图像,我这么说，虽然波函数，物理解释,但波函数的平方，有物理解释,当我们说到。
But f or Gadamer and his tradition, it's a little different.
但是对伽达默尔和他的传统，这有些不同。
The same year Malawi arrested the two men, it also detained a man f or putting up posters supporting homosexuality.
But James Murdoch has been dealing with problems at News of the World while trying to convince the British government and public to allows News Corp. to buy the rest of BSkyB f or months now.
It was while absorbing Glander's technique for preparing his dry-aged beef (sear it first, then cook it at 212 degrees F or less for maximum moistness) that I heard my only sad story of the weekend, the one about the husband of the woman next to me who'd given this all up to stay home for a Dallas Stars hockey play-off game.
尽管；虽然
关于，至于
打算；在选举中被提名；在法庭受审；被关押
举个例说；作为其中一个
毁坏；代替；对…有效
从事；免不了遭受
去找；被认为；主张；拥护；努力获取
参加，从事；追求；赞成
就…而论；据…；至于
更多收起词组短语
$firstVoiceSent
- 来自原声例句
请问您想要如何调整此模块？
感谢您的反馈，我们会尽快进行适当修改！
请问您想要如何调整此模块？
感谢您的反馈，我们会尽快进行适当修改！医生您好！我听有些孕妇说四维彩超单上有字母标注代表男孩女孩，说是F代表
问题：医生您好！我听有些孕妇说四维彩超单上有字母标注代表男孩女孩，说是F代表
病情描述：
医生您好！我听有些孕妇说四维彩超单上有字母标注代表男孩女孩，说是F代表女孩，M代表男孩，是这样的吗？准确率达到多少？那上边的字母有代表什么呢？好像有些地方的医院照的四维就没有字母标识，有的地方就有哦，好的，谢谢医生那个标着字母的我没有照片，上面不是有两张图像吗，就是在每张图像的上方黑色的地方有字母F我找一张相似的，医生稍等有的孕妈说那里是F，有的孕妈是M，而且还有生下来的，或者做了B超的，好像很准呢那他代表什么意思呢？哦，好的！谢谢医生，只是很想知道肚子里宝宝的性别
患者资料：
相关链接：
[]&最新相关问题：
直购热线：400-
您可能需要的药品
价格：￥121
【商品规格】：10mg×20片×1板/盒,铝塑水泡眼
【生产厂家】：Abbott Biologicals B.V.
【功能主治】：
价格：￥15.5
【商品规格】：10万单位每片，14片每盒。
【生产厂家】：中美上海施贵宝制药有限公司
【功能主治】：
&&主治医师
科室：妇产科
医院：邯郸第五医院
主治：无痛流产、剖腹产、卵...
医生回复：
你好，你说的这个是没有道理的，而且医院的超声报告也不能给你标注宝宝的性别，不要听信别人的传言
(大夫郑重提醒：因不能面诊患者，无法全面了解病情，以上建议仅供参考，具体诊疗请到医院在医生指导下进行！)
患者追问：
那上边的字母有代表什么呢？好像有些地方的医院照的四维就没有字母标识，有的地方就有
你说的这些我不太明白
患者追问：
哦，好的，谢谢医生
你可以把报告单子发过来吗
你指的那个F在哪里有标注啊
患者追问：
那个标着字母的我没有照片，上面不是有两张图像吗，就是在每张图像的上方黑色的地方有字母F
患者追问：
我找一张相似的，医生稍等
患者追问：
画圈的那里
患者追问：
有的孕妈说那里是F，有的孕妈是M，而且还有生下来的，或者做了B超的，好像很准呢
这个玉胎儿的性别是没有关系的
患者追问：
那他代表什么意思呢？
这个是没有关系的
患者追问：
哦，好的！谢谢医生，只是很想知道肚子里宝宝的性别
这个医院有明确规定不允许私自做非医学需要的胎儿性别鉴定
患者追问：
嗯，是这样的
还有疑问，需要帮助吗
患者追问：
没有了，谢谢医生
价格：￥13.3
价格：￥18.4
价格：￥45
价格：￥21
价格：￥7.5
价格：￥15
价格：￥1.9
价格：￥6.9
价格：￥12.7
价格：￥7.5
价格：￥16.3
价格：￥345
价格：￥19
价格：￥20.5
价格：￥124
价格：￥13.2
价格：￥38.9
价格：￥110
价格：￥465
价格：￥90.3
价格：￥420
价格：￥124
价格：￥42.5
价格：￥660
价格：￥245
价格：￥63
价格：￥38.9
价格：￥682
价格：￥248
价格：￥248
价格：￥120
价格：￥21.7
价格：￥37.4
价格：￥27
价格：￥14.7
价格：￥45.9
价格：￥26.7
价格：￥29.9
价格：￥39
价格：￥25.9
价格：￥7.5
价格：￥39.9
价格：￥2980
价格：￥612
价格：￥15
价格：￥35.9
价格：￥1185
价格：￥26.8
价格：￥32
价格：￥11
价格：￥88
价格：￥8.5
价格：￥258
价格：￥19.9
价格：￥16.5
价格：￥160
价格：￥118
价格：￥158
价格：￥36
价格：￥89
价格：￥109
价格：￥21.5
价格：￥69
价格：￥29
价格：￥25.8
价格：￥358
价格：￥18
价格：￥59
价格：￥27.8
价格：￥116
价格：￥1380
价格：￥78
价格：￥49
价格：￥89.9
价格：￥280
价格：￥17.6
价格：￥19
价格：￥13.3
价格：￥89
价格：￥89
价格：￥19.9
价格：￥58
价格：￥32
价格：￥167
价格：￥21
价格：￥50
价格：￥15.7
价格：￥29
价格：￥11.9
价格：￥30
价格：￥78
价格：￥32.6
价格：￥30.5
价格：￥30
价格：￥21.6
价格：￥19
价格：￥20
价格：￥42
价格：￥245
价格：￥560
价格：￥180
价格：￥320
价格：￥60
价格：￥280
价格：￥506
价格：￥130
价格：￥130
价格：￥49
价格：￥2.5
价格：￥14
价格：￥49
价格：￥1112
&&&&&&&&&& &&&&&&&&&&
Copyright & j1.com All rights reserved 沪ICP备号 上海华源大药房连锁经营有限公司下载作业帮安装包
扫二维码下载作业帮
1.75亿学生的选择
F（x)在(-s,s)上有有定义中有定义是什么意思啊
挚爱小慧HP9
这个是告诉你函数的定义域为(-s,s),也就是自变量x的范围,不用纠结个别词句
为您推荐：
其他类似问题
扫描下载二维码　　　　各种电动机的铭牌上大都标注了绝缘等级为B级或F级绝缘。那么什么是电动机的绝缘等级呢？最常见的电机绝缘等级B级绝缘,F级绝缘什么意思？下面台州恒富电机厂带您一起分享一下。　　电动机绝缘等级的设定主要是为了防止电流产生的热能把绝缘层烧坏，最常见的是B级绝缘，F级绝缘 . B级的绝缘材料，常见的是由云母、石棉、玻璃丝经有机胶胶合或浸渍而成的。　　电动机的绝缘等级是指其所用绝缘材料的耐热等级，分A、E、B、F、H级。允许温升是指电动机的温度与周围环境温度相比升高的限度。根据经验，A级材料在105℃、B级材料在130℃的情况下寿命可达10年，但在实际情况下环境温度和温升均不会长期达设计值，因此一般寿命在15～20年。如果运行温度长期超过材料的极限工作温度，则绝缘的老化加剧，寿命严重缩短。所以电动机在运行中，温度是寿命的主要因素之一。 电动机B级绝缘,F级绝缘等具体允许的温升如下：　　电动机的温度等级　　电动机的温度等级 A级 E级 B级 F级 H级　　最高允许温度℃ 105 120 130 155 180　　绕组温升限值℃ 60 75 80 100 125　　性能参考温度℃ 80 95 100 120 145　　上表中温升是电动机与环境的温度差，是由电动机发热引起的。运行中的电动机铁心处在交变磁场中会产生铁损。绕组通电后会产生铜损。还有其他杂散损耗等。这些都会使电动机温度升高。另一方面电动机也会散热，当发热与散热相等时即达到平衡状态，温度不再上升而稳定在一个水平上。当发热增加或散热减少时就会破坏平衡，使温度继续上升，扩大温差 ，则增加散热，在另一个较高的温度下达到新的平衡。但这时的温差即温升已比前增大了。 所以说温升是电动机设计及运行中的一项重要指标，标志着电动机的发热程度。在运行中， 如电动机温升突然增大，说明电动机有故障，风道阻塞或负荷太重。　　如上表绝缘等级为B级的电机绕组温升限制为80K；绝缘等级为F级电机按B级考核亦为80K；按F级考核则为105K，按相应标准，B级绝缘材料可长期承受的工作温度是130℃，F级可长期承受155℃，按电机实际运行最高环温40℃计算，则电机允许工作温度为：
B级时≤120℃（环温40℃+温升80 ）＜130℃
F级时≤145℃（环温40℃+温升105）＜155℃。　　另外，YR电机集电环的温升极限（温度计法）应不超过80K；电机轴承的容许温度（温度计法或埋置检温计法）对滚动轴承应不超过95℃；对滑动轴承（出油温度不高于65℃时）应不超过80℃或按双方协议。　　注意：在实际中，在使用温度确定后，往往会使用至少同级或较高的绝缘材料，以提高电机的使用寿命。常用的绝缘等级为B级电机，其内部的绝缘材料往往是F级的一般为提高使用寿命，往往规定高级绝缘要求，低一级来考核。比如，常见的F级绝缘的电机，做B级来考核，即其温升不能超过120度（留10度作为余量，以避免工艺不稳定造成个别电机温升超差）。
楼主发言：1次 发图：0张 | 更多
　　九星电绝缘轴承主要应用于电机行业中，，电绝缘轴承可避免电腐蚀所造成的损坏，因此与普通的轴承相比应用在电机中可保障运行更可靠。如有需求或疑惑欢迎前来咨询我们！　　
<span class="count" title="万
<span class="count" title="万
<span class="count" title="万
请遵守言论规则，不得违反国家法律法规回复(Ctrl+Enter)