续表形状简图转动惯量惯性半径体积矩形薄板 z m J1 = 1/2 ( a2 + b2 ) J = = m 12a2 √ √ √ √2 ( a2 + b2 ) 12 py = 0.289a y Jy m J. = 1262 b2 Pr = 0.2896 abh ...
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