微笑键型还意在减少输入错误的发生率。

The smile keys are also intended to cut down on typos.

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报道新型有机分子——三方向醚键型分枝状化合物的合成。

New organic molecules the three directional ether bond branched compounds were designed and synthesized.

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氢键不属于化学键，也不属于范德华力，是介于化学键和范德华力之间的一种由氢原子参与成键的特殊键型。

The hydrogen bond does not belong to the chemical bond, neither belong to the van der Waals force. It is a special kind of bond situated between the chemical bond and the van der Waals force.

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