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up-and-down method
busin. 上下变动法
tech. 上下法
up-and-down-method
stat. 起伏法; 阶梯法; 升降试验法
up and down method
math. 起伏法; 布鲁斯顿方法; 阶梯法
up-and-down method: 1 phrase in 1 subject
Oil / petroleum1

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