plunger pump with air tube 呼吸管柱塞泵
Road tanker vehicles. Metallic tankers for liquid chemical products. Devices effecting discharge by means of pressure: plunger tube, air off - take.
道路油罐车。液态化学产品金属油罐。压力排放装置：管状柱塞，进气孔。
The plunger is forced to undergo a simple harmonic vibration parallel to the direction of the tube.
活塞在平行于长管的方向被迫作合谐摆动。
The metering device has a plunger reciprocating within the tube, with the plunger having a handle.
该计量装置具有在所述管道内往复运动的柱塞，所述柱塞具有手柄。
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