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来源:雅诚德英语网
After the ball valve seat wear and tear, can be a ball into the seat, and with the rod lightly tapping ball several times, until the valve with the valve seat up close together.
球形阀阀座磨损后,可用一钢球放到阀座上,用金属棒轻轻敲击钢球数次,直到球阀与阀座密合为止。