贝他衰变的库仑效应
Coulomb effects in beta decay
螺栓有效截面面积
ettectlve cross―section area of bolt
核反应的库仑障壁
Coulomb barrier in nuclear reactions
测定截面的透射法
transmission method of cross section determination
垂直截面面积
Perpendicular cross section area
丛的截面
cross section of a bundle
大有效截面积光纤
large effective area fiber
导线截面的优化选择
Qitimized Option of Conductor Cross-Section
导线经济截面的计算
The Calculation of Conductor’s Economic Section
等效截面半径
equivalent sectional radius
等效截面惯性矩
Equivalent second axial moment of area
等效截面厚度
equivalent section thickness
阀有效截面积
effective cross section area of valve