This section includes description of any necessary equipment.
这部分包括说明所需要的设备。
For a successful refinement, a suitable description of the shape of the peaks is necessary.
在进行精修时，一个合适的峰形函数是必要的。
No dress-code description was necessary, he adds.
不需要再写出着装规定了，。
No dress-code description was necessary, he adds.
不需要再写出着装规定了，。
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