1.
There is no effective method for controlling gas current and distribution due to the light-load of coke and good ventilation of charging column in ferro-manganese furnace.
锰铁高炉焦炭负荷轻，料柱透气性好，缺乏调节煤气流分布和控制布料的有效方法。
2.
Theory and practice of integrated pillarless coal production and methane extraction in multiseams of low permeability
低透气性煤层群无煤柱煤气共采理论与实践
3.
Study on hygroscopicity and permeability of inner layers of poison-proof permeable protective suits
透气防毒服内层材料的吸湿透气性能研究
4.
Test method for gas permeability of plastic film
GB/T1038-1970塑料薄膜透气性试验方法
5.
" Polymeric materials, cellular flexible-Determination of air flow permeability"
GB/T10655-1989高聚物多孔弹性材料空气透气率的测定
6.
A nearly transparent, resilient glazed paper resistant to the passage of air and grease.
玻璃纸一种近乎透明的，有弹性的光滑料纸，不透气和抗油脂
7.
Test methods for water vapour transmission of building materials
GB/T17146-1997建筑材料水蒸气透过性能试验方法
8.
create an attractive weather-proof external finish whilst still allowing the wall to Breathe
(用了这种涂料)使得外墙面美观、耐侯,透气性好。
9.
Conservation of water sensitive objects with moisture permeable materials;
透水气材料在水敏感性文物保护中的应用
10.
Effect of Fabric Texture on Permeatable Antigas Cloth Inner Material Property
织物组织对透气防毒服内层材料性能的影响
11.
Experimental Research on the Hydraulic Conductivity and the Water-air Flow in a Sand Column;
砂柱中渗透系数及水气运移试验研究
12.
Very low viscosity, Unfilled clear epoxy resin casting or impregnating material, has excellent physical and electrical properties.
无填充料、透明、低粘度的环氧树脂灌注材料，具有优良的物理、气性能。
13.
Study on the methods of the permeability and strength testing of EPC coating
消失模铸造用涂料透气性及强度性能测试方法的研究
14.
Test method for water vapor transmission of plastic film and sheet--Cup method
GB/T1037-1988塑料薄膜和片材透水蒸气性试验方法杯式法
15.
testing methods for water vapor transmission rate of plastic film and sheeting(instrument method)
塑料薄膜和片材透水蒸气性试验方法 测量仪器法
16.
Permeable sintered metal materials--Determination of bubble test pore size
GB/T5249-1985可渗透性烧结金属材料气泡试验孔径的测定
17.
The Study of Gas Permeability and the Corresponding Mechanisms of Rubber/clay Nanocomposites;
橡胶/粘土纳米复合材料气体渗透性能与机理研究
18.
Studies on Process and Properties of PE/PP Hot-Air Through Bonded Diaper Nonwovens
热气流穿透PE/PP非织造尿布材料工艺及性能研究