1·It is not only wear-resistant, but also of good gas permeability.
它不仅耐磨，而且具有良好的透气性。
2·One of the main methods to test the gas permeability is using partial pressure difference.
用压差法测试塑料薄膜的透气性，是一个长期使用的主流测试方法。
3·According to the feature of the gas permeability, the perforation completion model was bettered.
针对气体渗流的特征对射孔完井模型进行了改造。
4·Radial and tangential gas permeability of Masson pine wood were measured respectively in this paper.
分析和讨论了影响马尾松木材渗透性及其各向异性的机理。
5·The axial gas permeability of wood samples was measured with rising-water volume-displacement method.
渗透性的测定采用水上升置换气流法。
6·Gas permeability and permselectivity of the inorganic membrane catalytic reactor have been investigated.
考察了气体在膜催化反应器中的渗透性能与分离性能。
7·Metals are good electrical conductors with high strength and usually have no porosities for gas permeability.
金属是具有较高的强度、导热性和气密性的良导体。
8·Metals are good electrical conductors with high strength and usually have not porosities for gas permeability.
金属是具有较高的强度、导热性和气密性的良导体。
9·The new equations for gas permeability of the coal samples are formulated by the numerical simulations of experimental data.
并根据大量的实验数据，拟合得到含瓦斯煤的渗透率随围压和孔隙压力变化的经验方程。
10·It features no Cl and toxic contents, higher water, oil and gas permeability and better strength resisting 4 Kg of pressure.
本超微滤芯无氯无毒、有较好的透水、透油和透气性，且强度良好，可抗4公斤的油或水的压力。