Its classification , production technology and principle were described.
阐述了花纹粉末涂料的分类、生产工艺和原理。
He maintained that classification by the degree of the equation was the correct principle.
他主张按方程的次数来进行分类是正确的原则。
He maintained that classification by the degree of the equation was the correct principle.
他主张按方程的次数来进行分类是正确的原则。
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