- tightness
 - n. 紧密,坚固
 
反义词
           
       参考例子
           - 1.Seating load and tightness is dependent on back pressure.
 - 阀座密封负载和紧密性与反压力相关。
 
- 2.Presents the management methods of air tightness and vacuum degree.
 - 介绍了机组气密性管理和真空度管理的方法。
 
- 3.Yes. I have had chest tightness. But I really felt uncomfortable yesterday.
 - 有,我以前就有感到胸闷过,但我昨天真的感觉很糟。
 
英文解释
           - n.
 - 1.a state occasioned by scarcity of money and a shortage of credit
 - 2.a tight feeling in some part of the body
 - 3.the spatial property of being crowded together
 - 4.extreme stinginess
 - 5.lack of movement or room for movement
 
网络释义
               - tightness
 - 气密性; 紧密性; 密封度; 不透气性;
 
- water tightness
 - 水密性; 水密度,水密性; 水密性、不透水性; 水密件;
 
- tightness of
 - 紧密性;
 
- steam tightness
 - 汽密性;
 
- smoke tightness
 - 不透烟性;