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- seal tightness test 密封性试验
- The gas tightness test of aux. Air reservoir. 副空气瓶密性试验。
- The gas tightness test of service air reservoir. 日用空气瓶密性试验。
- The tightness test for high-pressure air pipes. 高压空气管密性提交。
- The tightness test of fore(mid-ship)draft valve. 艏(舯)吃水阀密性试验。
- The tightness test of hull valve. 舷旁阀密性提交。
- The tightness test of main boiler. 主锅炉密性试验。
- Gas tightness test of control air reservoir. 控制空气瓶密性试验。
- Lobby doors to be done operation test and tightness test. 通道门操作和密性试验。
- The tightness test of inlet valve for emergency fire pump. 应急消防泵进水阀密性试验。
- In fact, actin ring seals tight unhelpful. 其实动环密封圈过紧有害无益。
- Cleaning and tightness test should be done about correlation piping. 3相关管路清洁完毕，并经过密性试验、验收结束。
- Air tightness test for auxiliary boiler (economize boiler) on board. 辅锅炉（废气锅炉）装船后气密试验。
- Closed mechanical grabs for dredging shall be maintained to avoid spillage and shall seal tightly while being lifted. 应使用密封式机械抓斗，以免物料溅溢，并于提起时保持抓斗密封。
- Tightness test(opening and closing test, emergency opening and closing test)for cargo hatch cover. 货舱舱口盖密性试验(启闭试验、应急启闭试验)。
- Storage: Seal tightly after each use and keep it in a cool and dry place. Avoid damp or sunlight. Best use contents within one month after opening. 贮存方法:存放于阴凉干燥处。防止潮湿、日晒,每次用完后请将袋口封紧,开封后最佳在一个月内用完。
- Tightness test(opening and closing test,emergency opening and closing test)for cargo hatch cover. 货舱舱口盖密性试验（启闭试验、应急启闭试验）。
- If a respirator does not seal tightly to the face, airborne hazards can penetrate or enter underneath the facepiece seal and into the breathing zone. 如果呼吸器不能紧密地与使用者的面部密合，空气污染物就会从面部密封部位穿透，进入呼吸道。
- Many medical facemasks, not approved as respirators, do not seal tightly to the face allowing airborne hazards to enter the breathing zone. 许多没有被批准作为呼吸防护口罩的医用口罩，不能与面部密合，空气污染物会直接进入呼吸道。
- Air tightness test and safety valve adjusting for main air receiver (control air receiver, air horn receiver)on board. 主空气瓶(控制空气瓶、汽笛空气瓶)装船后气密试验和安全阀的调整。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
