The R 2 A 20112 is an interleaving dual - phase critical conduction mode PFC controller.R2A20112是一种交错双相临界导电模式PFC控制器.Temperature becomes uniform by heat conduction until finally a permanent state is reached.温度通过热传导变得一致，直到...
Copper is a good medium for the conduction of heat and electricity.铜是热和电的良导体.Temperature becomes uniform by heat conduction until finally a permanent state is reached.温度通过热传导变得一致，直到最终达到恒定状态。There is hardly any conduction...
仅仅50毫克的咖啡因就能产生药理效果。As little as 50mg of caffeine can produce pharmacological effects.凭经验估计，一杯过滤咖啡约含80毫克咖啡因。As a rule of thumb, a cup of filter coffee contains about 80mg of caffeine.每次服用大约60毫克，每天最多4次，或遵医嘱。Take approximat...
There was an impressive exchange of salutations.他们庄严地互相行礼.He receives these salutations with gravity , and buries them along with the rest of his knowledge.他郑重其事地接受他们的致意, 并把这些致意连同其他见闻统统珍藏在心里.Answer restaurant phone withi...
How can I tell the abyssal zone from the shoal waters?我怎么区分深水区和浅水区 呀 ?Which only abyssal eyes can sail and fly in.只有深渊般的眼睛才能在那儿航行并飞翔.Rhetoric is abyssal and aberrant.修辞是深奥而异常的.The bathyal - abyssal facies , littoral faci...
Performing still gives him a buzz...表演仍然能让他兴奋不已。He began performing in the early fifties, singing and playing guitar.他从50年代早期开始表演吉他弹唱。She's much happier performing live than in a recording studio.与在录音棚里录音相比，她更喜欢现场表演...
Any head teacher who made errors like this would be chucked out.哪个校长只要犯了这样的错误都会被开除。They have appointed a new head teacher at my son's school.我儿子读书的学校任命了一位新校长。The head teacher is appointed by the school governor.校长是由...