We normally use the punch or hydraulic machine to expand the steel tube, but since the impetus and velocity is difficult to control, the cracking rate of expanding the steel tube reaches to over 10%.
钢管扩管通常采用冲床或液压机来加工，但由于冲力和速度难以控制，扩管破裂率达10%以上。
2
In open water the ability to swim at a higher stroke rate is a huge advantage as it helps you punch through wave and chop created by other swimmers.
在公开水域高划频是一个巨大的优势，它能帮助你在其他选手造成的波浪中迅速通过。
3
Sydney Carton drank the punch at a great rate; drank it by bumpers, looking at his friend.