Double-Out 这叫倍出
double-in double-out block 双进双出型端子
double in double out 双进双出
Take-out Double 技术性加倍
double-pass-out turbine 双抽气式汽轮机
double-in and double-out ball mill 双进双出钢球磨
double-in-double-out pulverizing mill 双进双出钢球磨煤机
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VOA: standard.2010.06.24
And by that what we mean is that they're absolutely identical, and it turns out that this here is not a double bond, it's not a single bond either, it's actually something in between.
这意味着它们是绝对完全相同的,实际情况应该是这不是一个双键,这也不是一个单键,而是介于两者之间的状态。
N 2 So any chemist should be able to just look at n 2 and know that it's a triple bond, but that's not something that we've learned how did to do yet, so let's go ahead and start a new topic that's going to allow us to have some sort of sense of what the valence electron configuration, which includes whether something's a single or double or a triple bond can be figured out for any given molecule.
任何一个化学家都应该能够仅仅通过看到2,就知道它有一个三键,但是我们还没学习如何做到这点,因此下面我们就开始进入一个新的主题,它将使我们能够有一定的认识,对于价电子的排布情况,包括可以对任何一个给定分子中的键是单键双键,还是三键作出判断。
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