In this paper, air permeability test has been conducted to determine the specific surface area of fine particle of sediment.
采用透气法，量测了细颗粒泥沙的比表面积。
The air permeability and the randomness of air permeability test of different shoe upper leather, shoe lining single -layer material and compounded samples were studied.
对不同鞋面革、鞋里材料单层和复合试样的透气性及其测试的随机性进行了试验研究。
It pointed out that, the water permeability test, the chloride permeability test and the air permeability test are suit for different situation and they can not be replaced each other.
认为水渗透性试验、氯化物渗透性试验、空气渗透性测试各适合于不同的场合和情况，不存在某一种强于另一种的问题。
It pointed out that, the water permeability test, the chloride permeability test and the air permeability test are suit for different situation and they can not be replaced each other.
认为水渗透性试验、氯化物渗透性试验、空气渗透性测试各适合于不同的场合和情况，不存在某一种强于另一种的问题。
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