The engine as it cooled itself sucked in air through the outlet hose producing suction in the vacuum chamber and so drawing the plunger down and compressing the spring .
当引擎冷却时,通过出口软管吸入空气,在真空管产生吸气,导致柱塞向下挤压弹簧。
Inspired by a toilet plunger , zurovcik 's device consists of nothing more than a bellows pump , a plastic tube , and a fitting that covers the wound or amputation site .