求翻译：其中，在a-b段，吸引能的作用大于斥能，出现第一极小值；而在b-c段，斥能的作用大于吸引能，出现一个峰值，称为势垒；在c-d段，吸引能作用又大于斥能，出现第二极小值。是什么意思？

Which, in the ab segment, the attractive energy greater than the exclusion can appear first minimum value; bc segment denounced energy greater than the attractive energy, there is a peak, called the barrier; in cd paragraph, attract can function is greater than the repellent can be a second minimum

In A-B, to attract more than exclusive to the role, the first small value, and in the B-C, exclusive to attract greater than the role that a peak, known as barrier; the C-D segment, and to attract more than exclusive role in the first 2 MIN value.

Among them, in a-b section, the attraction can the function is bigger than reprimands energy, appears the first minimum; But in the b-c section, reprimands can the function is bigger than the attraction energy, appears a peak value, is called the potential barrier; In the c-d section, the attraction

Among them, a-b, attracts rather than spent, minimal and the value appears and in paragraphs b-c, spend than to attract, a peak, known as barrier; c-d, attract greater than spent, another minimal value.

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