A measuring method for pulse permeability was briefly introduced in this paper. Pulse permeability of some magnetic materials was measured under different conditions, and the results were given.
本文简要介绍了脉冲磁导率测量方法。在不同条件下测量了某些材料的脉冲磁导率，并给出了测量结果。
In this paper, the affecting factors and study method of concrete permeability, the concrete permeation mechanism and the relationship between permeability and durability are discussed.
论述了混凝土耐久性的影响因素、研究方法，以及混凝土渗透机理和渗透性与耐久性的关系。
This paper studies the purpose is to find a kind of efficient lies in the actual production of low permeability of feasible coal permeability gas drainage, thus improving the rate of new methods.
本论文研究的目的就是在于寻找一种高效率的，在实际生产中切实可行的提高低透气性煤层渗透率，从而提高瓦斯抽放率的新方法。
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