The concept of geometrical frame of pre-bonding molecule is introduced to deal with steric packing.

本文提出分子结构在成键前的几何框架概念。

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The experiments show that CF4 treatment to silicon wafers can not only activate them but also polish their surfaces effectively, and it can improve the pre-bonding greatly.

实验表明，CF4对硅片的处理不仅可以激活 表面，而且可以对硅片 表面进行有效的 抛光，大大加强了预键合的效果。

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Adding amylum or oxidized amylum in the synthesis process of low toxic urea-formaldehyde resin can improve pre-press capability and bonding strength of plywood.

在低毒脲醛树脂胶粘剂合成过程中加入淀粉或氧化淀粉，能有效地改善胶合板板坯的预压性能和胶合板的胶接强度。

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When he cracked a rib in a boxing bout during the pre-Ashes bonding trip to Germany, it had been feared Anderson might not play in the early tour games.

BBC: Ashes: Pain-free James Anderson ready to battle Aussies

Stock is now back to full fitness and has been enjoying Rovers' pre-season training, which has included a tough team bonding trip to the Lake District with no luxuries.

BBC: Stock feels benefit of operation