potential energy barrier 势能垒 ; 位能障 ; 势垒
It has shown that less 1, 2-unit content corresponds to lower potential barrier of internal rotation and hence to lower energy of rotational isomerization.
进一步的研究表明，低1，2-链节含量对应着较低的分子链内旋转势垒和内旋转异构化能。
This is because that the deposition of the particles will increase the potential energy barrier for de-pining.
分析表明这和颗粒沉积引起的解附势垒增高有关。
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