gas clean-up

• 气体清除,提高真空度

gas clean-up的用法和样例：

例句

1. Dry drilling relies on a reciprocating metal head that pulverizes the rock in its path, which is then cleared from the borehole by high-pressure gas.
   乾钻法是利用来回动作的金属钻头击碎前方的岩石，再由钻孔所喷出的高压气体清除岩石。