blocking leakage with pres sure
Controllable Atmosphere and Pres sure
development countermea sure
differential press sure level meter
Sure
可靠
一定的
可靠的
确实的
的确
确信的、可靠的
看似无关回归
有把握
无疑
确信的
固
当然
肯定
明确
Variable displacement pump of constant pres sure
a thing out of commerce