例句與造句

1. In the petroleum industry, the process involves injecting gas through the tubing-casing annulus.
2. Larger rigs are capable of drilling through thousands of metres of the Earth's crust, using large " mud pumps " to circulate drilling mud ( slurry ) through the drill bit and up the casing annulus, for cooling and removing the " cuttings " while a well is drilled.
3. It's difficult to find casing annulus in a sentence. 用casing annulus造句挺難的