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The on - line good qualitative method for the pyrolysis, and off - line method based on the qualitative analysis.
离线 裂解模式实验方法操作方便,简单易行, 而且在定性基础上可以实现定量分析.
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In the past, people did this only by qualitative method in analysing and evaluating.
以往只是用定性的方法分析评价书刊的排印质量.
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