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1 ?外覆环 ... Outer seal ring 轴承外衬圈 outer cover ring 外覆环 outer guide ring 外导水环 ...
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The device is mainly made up of inner tube, outer tube, piston tube, end cover, retaining ring, hanger, liquid-route element and sealing element. 该装置主体由内管、外管、活塞管、端盖、承压环、吊耳、液路元件和密封元件等组成。 - 2
The water heating control valve is composed of a valve casing, a valve outer cover, an inner cover, a pressure spring, a valve core, a positioning device and a sealing ring. 水暖控制阀由阀壳、阀外盖、内盖、压簧、阀芯、定位装置及密封圈构成。
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