脚标 [
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- 教科书通常用符号和两个脚标表示剪应力。
Textbooks commonly denote shear stresses by the symbol and two subscripts. - 每一脚标指的是代表一个力或一个位移的位置和方向的坐标。
Each subscript refers to a coordinate which represents the location and direction of a force or of a displacement. - 教科书通常用符号(+,-)和脚标表示平面的法向应力(X,Y,Z)。
Textbooks commonly denote normal stresses by the symbol and a subscript indicating the plane on which the stress acts.
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