Yet, the special processing methods are mostly limited by the material.
而特种加工的方法大多受到材料的限制。
It has some special functions which can not be achieved by other experimental methods.
它所具有的某些良好功能是一般试验方法所难以达到的。
It has some special functions which can not be achieved by other experimental methods.
它所具有的某些良好功能是一般试验方法所难以达到的。
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