将差速器向盆形齿轮调整工具处的变速器盖方向压，然后读取百分表上的间隙值。
Press the differential towards the transmission cover at the crown wheel adjusting tool and read off the backlash on the dial gauge.
根据气体状态方程和平衡方程，推导出在某点真空表反映的真空度值与孔压计反映的孔压差的理论关系式。
The theoretical formula about vacuity in vacuum tube and pore-water pressure at the observation point was obtained in this paper by using equation of gas state and equilibrium equation.
差压表是用来检测两个检测点的压力差值，直接在仪表表盘上指示出差压值的机械式压力表。
Differential pressure gauges is used to test the pressure difference between two points, it is a mechanical pressure gauge that can directly indicate the pressure difference on the instrument meter.
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