pull up基本解释
(使)停下；拔起
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verb
1. remove, usually with some force or effort
also used in an abstract sense
e.g. pull weeds
extract a bad tooth
take out a splinter
extract information from the telegram
Synonym: extractpull outpulltake outdraw out
2. come to a halt after driving somewhere
e.g. The Rolls pulled up on pour front lawn
The chauffeur hauled up in front of us
Synonym: draw uphaul up
3. cause (a vehicle) to stop
e.g. He pulled up the car in front of the hotel
Synonym: draw up
4. straighten oneself
e.g. He drew himself up when he talked to his superior
Synonym: draw upstraighten up
1. （车或驾车者）减速停下
When a vehicle or driver pulls up, the vehicle slows down and stops.
e.g. The cab pulled up and the driver jumped out.
出租车减速停下，司机跳了出来。
2. 把（椅子）拉到近处坐下
If you pull up a chair, you move it closer to something or someone and sit on it.
e.g. He pulled up a chair behind her and put his chin on her shoulder.
他拉过一把椅子坐在她后面，将下巴抵在她的肩膀上。
3. （使）突然停下；（使）猛地停住
If you pull up or if something pulls you up, you suddenly stop what you are doing.
pull up在线翻译
e.g. Suddenly, he pulled up sharply in his stride, and fell to the floor...
突然，原本大步流星的他猛地停住了脚步，倒在了地上。
e.g. She recognized at the same instant Rachel's presence. It pulled her up short.
雷切尔一出现她就认出她来了，随即停下了手中的活儿。
4. 提高；改进
If someone pulls you up or if you pull yourself up, you improve your situation or your skill at something.
e.g. We had a very good mathematics mistress who pulled me up...
我们有个很出色的女数学老师，她帮我提高了水平。
e.g. He was made redundant and now he's trying to pull himself up again.
他之前作为冗员被裁，现在他正试图再一次奋发图强。
1. pull up的意思
1. 上拉：普通电阻一般作为上拉(pull up)或者下拉(pull down)电阻,一般在芯片的OC(OPEN DRAIN)输出处使用pull up电阻. 或者用于那些驱动能力不足的地方增加驱动电流. 钽电容最大的缺点就是其危险性. 其过载(Overload)时,会发生燃烧(法○功.
2. 拉升：在这种肖特基T2L电路中,加入驱动晶体管Q5以提高Q4的开关速度,因此也即加快了输出电压V0向电池势拉升(Pull up)的速度. 这个器件还引入了附加的二极管电压降,因此就不需要标准的T2L电路(图11.13(a))中的二极管D1.
3. pull up的解释
3. (使)停下：pull together齐心协力 | pull up (使)停下 | put across解释清楚,说明
