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卡瓦式封隔器
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卡瓦式封隔器
Encyclopedia
工学
桥塞
释
slip-type packer
卡瓦式封隔器
利用卡瓦固定,防止管柱轴向移动,通过下放一定管柱重量或管柱内加液压使胶筒直径变大,封隔油、套环形空间的封隔器。
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