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Make a screw out of the curve shown below using a standard Revolve.
在曲线外制作螺钉的模型，用标准旋转如下图所示。
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The standard curve should cover the entire range of expected concentrations.
标准曲线应涵盖整个预期浓度范围。
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The standard curve should cover the entire range of expected concentrations.
标准曲线应涵盖整个预期浓度范围。
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