• The switch position of butterfly disc is limited by the adjusting screw pole on the worm gear transmission device. The indicating device displays the position of the valve switch.

    开关位置蜗轮传动装置调节杆限位,指示牌指示阀开关位置。

    youdao

  • The switch position of butterfly disc is limited by the adjusting screw pole on the worm gear transmission device. The indicating device displays the position of the valve switch.

    开关位置蜗轮传动装置调节杆限位,指示牌指示阀开关位置。

    youdao

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进来说说原因吧 确定