为什么,属性的总和:,机械强度,化学惰性,易于制造,那不是独特的解决方法。
Why? Bundle of properties: mechanical strength, chemical inertness, ease of fabrication: that's not a unique solution.
为什么,属性的总和:,机械强度,化学惰性,易于制造,那不是独特的解决方法。
Why? Bundle of properties: mechanical strength, chemical inertness, ease of fabrication: that's not a unique solution.
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