alternating axis of symmetry [机] 更迭对称轴 ; 交错对称轴
alternating axis of symmertry 交错对称轴
free alternating current axis 虚轴
alternating elliptical axis tube 交叉缩放椭圆管
The distance of the contour from its axis of rotation continuously varies through alternating maxima and minima.
这是自其旋转轴轮廓的距离不断变化，通过交替极值。
An experimental and numeric study was carried out for the alternating elliptical axis tubes. The fitted correlation was derived for the experimental heat transfer and resistance coefficients.
对交叉缩放椭圆管进行了实验和数值研究，给出了换热和沿程阻力系数实验拟合关联式。
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