加载电压时，正负电荷分别在两个电极上聚集，生成一股挤压聚合物的引力。
When a voltage is applied, positive charge builds up on one electrode and negative charge on the other, creating an attractive force that squeezes the polymer.
人是不可能指挥这成百上千万的实际知识聚集到一起造出我来的，就像他不可能把分子聚合到一起造出一棵树一样。
Man can no more direct these millions of know-hows to bring me into being than he can put molecules together to create a tree.
该公司专门从事“聚合太阳热能技术”，该项技术用镜子聚集太阳光，制造热能。
Instead, the company specialises in "concentrating solar-thermal technology" in which mirrors concentrate sunlight to produce heat.
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