... throttle valve casing 节流阀体 valve casing cover 阀箱盖 exhaust valve casing 排气阀壳 ...
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valve casing cover
阀壳盖
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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