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注意：这些阀门采用止推垫圈实现静电接地。
Note: Valves are static grounded by thrust washer.
youdao
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注意：这些阀门通过止推垫圈和填料实现静电接地。
NOTE: Valves are static grounded by thrust washer and packing.
youdao
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注意：这些阀门通过止推垫圈和填料实现静电接地。
NOTE: Valves are static grounded by thrust washer and packing.
youdao