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    閥桿最小直徑和最小閥桿直徑是如何規定的

    發布時間:2020-08-14 15:22:27   訪問:2253

    閥桿最小直徑指的是閥桿與填料接觸部分的直徑。最小閥桿直徑是指閥桿螺紋退刀槽的直徑
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