... ring of operators ==> 算子环 ring of plug ==> 塞环 ring of quaternions ==> 四元数环 ...
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The periphery of the plug body, which is far from the plug handle, is provided with a plurality of circular grooves, in which the O-shaped rubber seal ring is embedded.
本发明远离水塞提手的水塞体的外周面上设置若干圈环形凹槽，O形橡胶密封圈卡嵌在环形凹槽内。
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