null hypothesis
归零假说 null hypothesis
零售手风琴假说 retail accordion hypothesis
零售轮假说 wheel of retailing hypothesis
·2,447,543篇论文数据,部分数据来源于NoteExpress
利用极值假说研究输沙率为零时的稳定断面形状。
The research of stable channel shape on the condition of bedload discharge equals zero by use the extreme hypotheses.
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