The effect of the compound mineral fiber material on the air permeability and thickness of rice paper;
矿物复合纤维原料对手卷烟纸厚度和透气度的影响
The micro-morphology of the leather surface was observed and the air permeability was accurately calculated.
研究了UV固化皮革涂饰剂的光引发剂、光活性单体、助剂与皮革力学性能及表观性能的关系,并对皮革表面微观性能及透气度进行了表征。
The results showed that the brightness of the hand-sheets decreased with increasing dosage of SDS;and the tensile strength of hand-sheets increased first with increasing charge of SDS,then decreased;however,the tearing strength of the hand-sheets decreased first with the increasing dosage of SDS and then increased;the air permeability of the hand-sheets reached maximum at a certain dosa.
研究表明,纸页的白度随非离子瓜尔胶浓度的增加而降低;抗张强度先随非离子瓜尔胶添加量的增大而增大其后随之下降;撕裂度先随非离子瓜尔胶用量的升高而下降其后随之提高;透气度先随非离子瓜尔胶用量的升高而增加达到一个峰值后又降低。
The Study on a New-type On-line Porosity Measuring System;
水松纸透气度在线检测系统研究
A test is done on pre-baked anode made from calcined coke in aspects of apparent density,real density,porosity,resistivity of powder,compressive strength,which shows compressed petroleum coke improves its chemical and physical performances.
采用压密煅烧石油焦制成预焙阳极,通过体积密度、真密度、显气孔率、电阻率、耐压强度、透气度的测试,结果表明,压密石油焦能显著地改善预焙阳极的理化性能,使预焙阳极制造过程中沥青加入量控制在13%,预焙阳极的体积密度达到1。
The components, working principle and daily maintenance of the online porosity measurement system SMP600 and its application on the high-speed cigarette paper machine are introduced.
介绍了SMP600在线透气度检测仪的组成、工作原理、日常维护注意事项及其在生产中的作用。
Dormancy for hard seeds is caused by impermeability to water and gas and mechanical constraint of the seed coat.
硬实种子种皮透水透气性差和对胚生长的机械限制，引起种子休眠。
soil permeability meter
土壤透水透气度测定仪
closed so tightly as to be airtight or watertight.
关闭的很紧的，不透气的或不透水的。
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
wool-like and water proofing agent with permeability
仿毛防水透气整理剂
clear water; clear plastic bags; clear glass; the air is clear and clean.
透明的水；透明的塑料袋；透明的玻璃；空气透明、清鲜。
Effects of Temperature on Gas and Water Vapor Permeability of Preservative Film
温度对保鲜膜透气和透湿性能的影响
Measurement and Comparison of the Dynamic Permeability and the Static Permeability of Airbag Fabrics
安全气囊织物动态透气性与静态透气性的测试
"Fan me, Mary, fan me!
"给我透透气，玛丽，给我透透气！
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
This adversely affects water movement, permeability, and aeration.
这对水分移动，渗透度及通气性有不利影响。
Poor drainage causes deficient soil aeration and death of the roots.
排水不良能减低土壤的透气性，使根死亡。
Rigden's permeameter
里格登透气性试验仪
testing method for permeability to gases of refractory bricks
耐火砖透气性试验方法
Vapor permeable stretch film： Soft breathable diaper.
透气性延伸膜：如质感柔软之透气性纸尿布制品。
Note: Air permeability and breathability are not synonymous.
注意：空气渗透性和透气性是两个不同的概念。
air transmission coefficient
透气系数，空气透过率
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