tight pack meaning in English

密封包装
致密充填

The volume of a solution of a salt is generally less than the sum of the unmixed volumes of the salt and the water, because of the tight packing of water molecules in the salvation shell around the ions .
盐溶液的体积一般都小于未混合时盐的体积与水的体积之和，因为水分子紧密地堆积在离子周围的溶剂化层中。
To best use whirlwind , lead a group of monsters into tight pack , then click past to the other side of the monsters
要想最佳地使用旋风，应该首先引导一大群怪物集中成很紧密的一堆，然后点在越过怪物另一侧（空地。
Precision ground blade on both sides for tighter packing chamber sealing . sealing face of the gate is lapped to provide the best possible seat tightness
两侧都经过精密光亮磨光的刀片确保填料腔的气密性密封。闸板的密封面经过研磨，以提供最好的阀座密封性。
We devise the block rejoining process and block alignment operation for forming the l t - shaped blocks into their original configurations . the shape flexibility of the soft blocks , and the rotation and reflection of l t - shaped blocks are exploited to obtain a tight packing . the empty rooms are introduced to the process of block rejoining
本文提出的多边形模块处理方法，能够对l t形模块进行快速有效的布局，保持其多边形构形，不仅可以处理二划分结构，同时也可以处理非二划分结构的布图结果。