Whereas, there are many influential factors in practical production, it is difficult to set up the arithmetical model among the factors correctly and the result is not exact and scientific.
而实际生产中相互干扰的因素甚多，很难准确的建立各参数之间的数学模型，工艺参数的获得不准确、不科学。
Whereas, there are many influential factors in practical production, it is difficult to set up the arithmetical model among the factors correctly and the result is not exact and scientific.
而实际生产中相互干扰的因素甚多，很难准确的建立各参数之间的数学模型，工艺参数的获得不准确、不科学。
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