... code medical terms 释义:医学术语用码 curvature sign 释义:曲面征[超声术语] Current Medical Information and Terminology 释义:现代医学信息和术语 ...
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It is locally convex in the sense that it has no loops and the curvature never changes sign.
它的局部是凸的,因为它没有环路,且曲率永远不会改变符号。
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It is now necessary to introduce a sign convention for radii of curvature.
现在必须介绍曲率半径的正负号规则。
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