... 品质的变异 variation of quality 符号变异 variation of sign 平方变异 variation of squares ...
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variation of soil quality 土壤质量变异
variation of water quality 市水体质量变化特征
variation of environmental quality 环境质量变化
variation trend of water quality 水质变化趋势
·2,447,543篇论文数据，部分数据来源于NoteExpress
However, it says some of the variation could be due to differences in the quality of the data submitted by hospitals.
BBC: Maternity care varies across England
Juran focused more on the human-relations aspects of quality, while Deming's approach involved demonstrating that all business processes are vulnerable to a loss of quality through statistical variation.
ECONOMIST: Guru
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