inner lip seal 带内唇缘密封
inner aspect lip 唇内面
inner welding lip structure 内焊唇结构
inner aspect lower lip 释义下唇内面
lip on inner ring 内圈挡边
The inner lip and the outer lip respectively prevent oil from spilling, and prevent impurities from entering on different positions, and simultaneously play dual protection to the universal joint.
两者在不同 位置分别防油溢出、防杂质进入，同时对万向节起到了双重保护。
Above: Salivary lips showing parallel ridges of inner surface of lower lip, last larval instar of Osmia chalybea.
上图：壁蜂老熟幼虫下唇内表面的平行纹
The barrel rollers are supported by the high inner-ring lip and can align themselves in the spherical outer raceway.
滚子具有高内圈垫片可以在球面外滚道自动调整。
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