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调查法
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调查法
通过问卷、成套测验、访谈形式向具有代表性的调查对象了解态度、意见或偏好等信息的一种相关研究方法。
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ratio of tea polyphenols to amino acids
ratio of the circumference of a circle to its diameter
ratio of transportation accident
ratio of wool yield to liveweight
ratio of yield point to plastic viscosity
ratio paper
ratio parameter
ratio programming
ratio resistor
ratio scale
ratio scaling
ratio set
ratios of juveniles in the catch
ratio standards of DC voltage
ratio statistic
ratio test
ratio transformation
ratio up to the standard of water quality
ratmouth barbel
Ratnamati
Ratnapura
Ratner
ratoon banana
ratoon cutter
ratooning rice
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