It's a bulb pressure tester for detecting battery leaks.
这是检测电瓶漏气用的胶球压力试验器。
Busy work and high pressure allow a lot of ladies' face dark, which is just like a light bulb shortage of electricity distributing the dim light.
工作的忙碌和压力让很多都市女性的脸色暗沉无光，就像一个电量不足的灯泡，散发着昏黄的光亮。
Glass shell made of a light bulb to keep the filament in a vacuum, or inert gas under low pressure, role is to prevent oxidation of the filament at high temperature under.
电灯泡外壳用玻璃制成，把灯丝保持在真空，或低压的惰性气体之下，作用是防止灯丝在高温之下氧化。
Pump up for suction then disconnect the bulb, pressure will stay.
为吸泵然后断开灯泡，压力将继续。
Pump up for suction then disconnect the bulb, pressure will stay.
为吸泵然后断开灯泡，压力将继续。
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