... two-stage pump 双级泵 two-stage regression method 两段回归法 two-stage regulator 双级调节器 ...
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two-stage regression method 两段回归法
stage regression method
阶段回归法
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Using method of integral regression, effect of varying amounts per factor on annual yield and period of positive or negative effect during each growing stage of grasses were given.
用积分回归法分析了牧草生长发育各时段单位因子变化量对年产量的影响程度及正负效应时段。
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