壁面有效吸收系数
surface effective absorptivity
螺栓有效截面面积
ettectlve cross―section area of bolt
大有效截面积光纤
large effective area fiber
阀有效截面积
effective cross section area of valve
节点有效截面宽度
frame’s joint effective width
截面有效抗弯刚度
effective bending stiffness of section
磷素吸收有效性
phosphorus uptake efficiency
平均有效吸收系数
average effective absorption coefficient
群平均有效截面
Group-averaged effective cross section
有效截面理论
theory of effective section
有效吸收层厚度
Effective thickness of absorption layer
有效吸收空间
effective foraging space EFS