I cut it in half, I'll use some protractors and dividers and compasses, you can split the meter into any fraction you like.
把它切成两半,我用量角器,两脚规,还有圆规,你想把一米分成任意份数
They do that in a very special way in that they - restriction enzymes are able to identify a particular sequence of bases in a gene.
限制性内切酶的工作机制很特别,它能识别基因中的一段特定的碱基序列
I'm asking what's the tangential speed as it moves along the circle?
它在做圆周运动时,切向速度是多少
This gives you a biological mechanism for cutting, using restriction enzymes, and then you denature so that it falls apart, and then you renature so that it comes back together.
这是一种切割DNA的生物机制,用限制性内切酶,改变DNA的性质让它打开,然后让它合起来恢复它的性质
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