释文：在天然物质中含量在1%～0.01%的元素。但在地质学中应用不严格，常把含量小于万分之几的元素也称副元素，而与微迹元素（痕量元素）一词混用。
平面高副传动中，如何确定高副元素的曲率半径是一个很重要的问题。
In higher pair plane transmission, it is important to determine the curvature radius of the member.
首次指出了高速运转条件下，运动副副元素由于弹性变形而出现的连续变形接触现象。
When the resulting equations of motion are solved numerically, they show the elements of a clearance joint keeping continuous deformation contact when the mechanism works at high speed.
首次指出了高速运转条件下，运动副副元素由于弹性变形而出现的连续变形接触现象。
When the resulting equations of motion are solved numerically, they show the elements of a clearance joint keeping continuous deformation contact when the mechanism works at hi...
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