n. barrier
misc. barrier potential ; potential barrier
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降凝剂提高了蜡晶析出的临界半径，增大了成核位垒，使蜡晶析出困难。
PPD makes the critical radius and the potential barrier of nucleation of wax crystal increase, and makes the separation of wax from waxy oil difficult.
此外，还研究了不同取代基和催化剂五羰基合钨对反应机理及反应位垒的影响。
In addition, the catalytic effect of W5 and substitution effect on the reaction mechanisms and reaction barriers have also been considered.
结果显示，在重核从接触到复合核形成的过程中，颈部自由度和径向自由度可能会同时遇到由于内侧位垒引起的熔合阻止。
It appears that the neck and the radial degrees of freedom might both be hampered by an inner potential barrier on their path between the contact configuration to the compound nucleus.
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