石头和宝石的切割方法也与年代有关。
The methods used to cut stone and gems can also be indicative of age.
对双相不锈钢进行热切割应该仅限于等离子弧切割方法。
For duplex stainless steel thermal cutting shall be limited to the plasma arc method.
采用实空间原子切割方法分析了阳离子和阴离子基团对光学性质的贡献。
A real space atom cutting method is adopted to analyze the respective contributions of the cation and anionic groups to optical response.
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