Plastics piping systems . thermoplastics piping systems for soil and waste discharge . test method for airtightness of joints 塑料管道系统.污物和废料排出用热塑管道系统.接缝气密性的试验方法
As a seal test , sensitivity of helium leak test is higher than other test methods as gas seal and nh3 leak test 摘要氦?漏试验作为一种致密性试验，它的检漏灵敏度远远超过了气密性试验和氨渗漏等试验方法。
Insulation , noise , air tightness : no system - wide metal materials , the complete elimination of the dripping cold bridges hidden dangers 保温、隔音、气密性：全系统无金属材料，彻底杜绝了滴水冷桥等隐患。
Connectors for electronic equipment - tests and measurements - climatic tests - test 11n - gas tightness , solderless wrapped connections 电子设备连接器.试验和测量.气候试验.试验11n .无钎焊包装连接的气密性
Plastics piping systems - thermoplastics piping systems for soil and waste discharge - test method for airtightness of joints ; german version en 1054 : 1995 塑料管道系统.建筑物排污热塑管道系统.连接件气密性
Plastics piping systems - thermoplastics piping systems for soil and waste discharge - test method for airtightness of joints 塑料管道系统.建筑物内粪水和污水排放下水道用热塑管道系统.连接件的气密性试验方法
Thicker knife gate to eliminate distortion under maximum differential pressure and to provide tight seating ( see page 12 ) 更厚的刀闸能够避免在最大压差环境下产生的扭曲，保证阀座的气密性密封（参阅第12页） 。
Thermal insulation and energy economy of buildings - part 7 : airtightness of building , requirements , recommendations and examples for planning and performance 建筑物绝热和能量经济学.第7部分:建筑物气密性.计划
Aerospace series . elements of electrical and optical connection . test methods . part 319 : gastightness of solderless wrapped connections 航空航天系列.电气及光学连接元件.试验方法.第319部分:非焊接缠绕接线的气密性
Abstract : by leakage tests under different weather , it established a air - tight mathematical model for a missile launch container 文摘:通过对导弹贮运发射箱在各种使用环境下的气密性分析，建立了发射箱可靠贮存数学模型。
