control valve unit造句

例句与造句

1. Schematic view of the Saxomat automatic clutch control valves unit : " 1-solenoid; 2-solenoid valve; 3-vacuum check valve; 4-pressure reducing valve; 5-vacuum regulator valve; A-vacuum chamber; B-intermediate chamber; C-atmosphere chamber " . " The solenoid valve is shown activated, the clutch is fully depressed ."
2. It's difficult to find control valve unit in a sentence. 用control valve unit造句挺难的