量油尺，万向接头，呆接头，汽车排吸油复合管。
Oil feet of universal joints, stay, joint, car row oil absorption multiple tube.
在吸嘴的使用过程中，密封唇的自由端受环境压力冲击，从而抵靠在内部接头件的外表面上，以便提供密封。
In use process of the nozzle, free end of the seal lip is shocked by environment pressure, so leans against exterior surface of the inner joint member for providing seal.
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