thermal recovery packer
... thermal recovery unit 热量回收设备 thermal recovery packer 热采封隔器 thermal recovery boiler 热采锅炉 ...
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它的研制与成功应用，克服了原来多种热采封隔器的缺点，如操作困难，不座封和不解封的几率较高等。
This kind of packer overcomes many disadvantages of the previous ones, such as difficulty in operation, and high possibility of not setting and not releasing.
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