This paper describes the theory, features and testing results of the air reverse circulation drilling process used in geo physical blast hole drilling.
概述了空气反循环钻进工艺应用于物探爆破孔施工的原理、特点及其试验应用情况。
In the process of cooling of the HEJ the cold air is changed into hot blast and...
冷却用空气在冷却炉胆的过程中成为热风并被送入炉内实行热风操作。
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