气泵输送阀 air pump delivery valve

气泵输出管 air pump dilivery pipe

输气吸扬泵 gas life pump

气泵输送阀轴 air pump delivery valve spindle

输气吸扬泵唧系统 gas lift pumping system

输油气泵站 [油气] oil and gas pump station

气缸油输送泵 cylinder oil transfer pump

气液混输泵 [机] gas fluid mixture pump

油气混输泵 Gas-oil multiphase pump ; oil-gas multiphase pump

负压气力输送泵 suction pneumatic conveyor