The upper part of the framework guiding support ring is provided with circular ridges, is mutually inlaid and connected with the seal ring.
骨架导向支撑环的上部设有环形凸棱并与密封圈相镶嵌连接。
The upper part of the framework guiding support ring is provided with circular ridges, is mutually inlaid and connected with the seal ring.
骨架导向支撑环的上部设有环形凸棱并与密封圈相镶嵌连接。
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