n.密闭；紧密；不渗透性
The ability to move air through plant canopies is related directly to the tightness of the green house. 空气通过植物冠层移动的能力直接与温室的密闭程度有关。
Stop at the point where it starts to lose tightness and definition. 在它开始失去紧密和定义的点时停止。
Experimental and simulative results are given to verify the facts that the resolution and the pattern fidelity are sensitive to the contact tightness between layers. 实验与理论研究结果均表明采用银膜超级透镜的光刻技术的分辨率和成形保真度与层间的紧密连接度密切相关。
n.不透气；气密；密封
n.气密(密封性)
