主要应用:用于输送焊接或切割用的氧气和乙炔。
Application: Mainly used for conveying of oxygen and acetylene gases for welding and cutting equipment.
我们不会用锤子来切割木板,但我们却经常试图用金钱来做一些它用途之外的事情。
You wouldn't use a hammer to cut a two-by-four, but we often attempt to use money to achieve things for which it wasn't designed.
因此我使x等于一个常数,那就是说,用一个平行于黑板的平面来进行切割。
OK, so I fix x equals constant. That means that I slice by a plane that's parallel to the blackboard.
If you have DNA fragments, so this is DNA that you've cut up into fragments using restriction enzymes for example.
如果你有DNA片段,例如有一段你用限制酶,切割成片段的DNA
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
应用推荐