It's a bulbpressure tester for detecting battery leaks.
这是检测电瓶漏气用的胶球压力试验器。
2
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。
3
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.