1. An application programmer must supply a tangent, binormal, and normal at each vertex.
   程序员必须提供每个顶点的切线、副法线和法线。
2. Loretta's mind went off at a tangent .
   洛蕾塔的思想突然离题了。
3. The tangent, binormal, and normal attributes represent the coordinate axes of the tangent space surrounding each vertex.
   切线，副法线和法线代表了每个顶点的切线空间的三个轴。
4. Objective:To investigate the methods of locate curative position of tangent field in breast cancer isocenter irradiation.
   探讨乳腺癌放疗胸壁切线野等中心照射,确定等中心的定位方法。
5. One moment the professor is working hard on a problem in physics, the next he’s gone off at a tangent and he’s talking about bees.
   前一分钟教授还在努力解答一道物理题，下一分钟他就突然开始讲起蜜蜂来。
6. The sensitivity of denierer cannot be impr-oved but the shim thickness of it ensures the minimum size of strand silk be tangent to with both sides of gauges.
   感知器垫片厚薄必须保证生丝细限纤度时的丝条恰好与两边隔距片相切,才能提高感知器的灵敏度。
7. The formula of the curve tangent slope at some peculiar point in the orthograph on the stereoscopic surface intersecting line and the method of making tangent are given as well.
   本文通过可展曲面的微分不变量,导出可展面的曲率线与曲率特征,并以锥面和切线曲面为例阐明这些特性的几何意义。

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