You can think of this step as tailoring a suit: the garment is largely the right size but needs some alteration to fit stylishly.
您可以将这个步骤想象为裁剪一件衣服：这件衣服大小基本合适，但是需要进行一定的修改以使其更加时尚。
The structure and pore size of the active carbon are effectively changed by alteration of dosage and ratio of the catalyst.
改变催化剂的用量及两种催化剂的比例可以有效地改变活性炭的微孔结构及孔半径。
Restrain alteration size is applied to improve the efficiency of structure optimization.
在拱坝优化设计中采用了约束变尺度算法，提高了优化效率；
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