The misunderstood "Dupuit stable well flow model" ("model of radius of influence") is the main "theoretical" basis of the unreasonable selection of exploited horizon of groundwater.
被误解了的“裘布依稳定井流模型”（“影响半径模型”）是不合理选择地下水开采层位的主要“理论”依据。
Objective To explore the selection of the surgical ways for treatments of fractures of the head of radius.
目的探讨桡骨小头骨折手术治疗方法的选择。
Here the selection of base circle radius and its effect upon the assessment of departure from roundness is discussed, and the corresponding curve is given.
这里讨论了“叠加基圆法”中基圆半径的选取原则及其对不圆度评定的影响，并作出关系曲线。
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