1) loss of noise diffraction
声衍射损失
1.
This new method improves the Liepmann analogy based on displacement thickness monopole sound source model by using Krane dipole sound source model,and considers the effects of pressure gradient and the loss of noise diffraction on boundary layer transition.
该方法利用Krane的偶极子声源模型对基于Liepmann理论的位移厚度脉动单极子声源模型进行改进,并综合考虑压力梯度和声衍射损失对转捩区声辐射的影响。
2) sound diffraction
声衍射(声)
3) acoustic loss
声损失(声)
4) diffractive spillover
衍射消失
5) diffraction loss
衍射损耗
1.
Determination of axis and approximation of diffraction loss of the misalignment resonator are given for three lasers:the He-Ne laser、the CO2 laser and the CO laser.
文章给出矩形镜谐振腔失调后的光轴确定方法,对矩管He Ne激光器、矩管CO2激光器和矩管CO激光器因失调引起的衍射损耗进行了分析和近似计算。
2.
The experimental results of 50 W of Q switch power,greater than 50% of diffraction loss,less than 5% of insert loss at 4 mm of the light beam in diameter,1.
0 6 μm,衍射损耗 >5 0 % ,驱动功率 5 0 W,插入损耗 <5 %的实验结
3.
And diffraction loss of fundamental mode and higher-order mode that propagate in the cruciform aperture resonator is discussed.
给出十字形孔径谐振腔失调后的光轴确定方法,对因失调引起的腔内损耗进行了分析和近似计算;讨论了基模和高阶高斯光束在十字形孔径谐振腔中传输时的衍射损耗问题。
补充资料：声衍射
声衍射
物理学术语。又称“声绕射”。由于介质中有障碍物或介质的不连续性，投射声波在介质上产生散射，投射波与散射波的叠加即为衍射。衍射表现为投射波的波阵面出现了畸变或波列偏离其直线行程，能达到只沿直线行进所不能达到的区域，故称声绕射。它同障碍物的线度与声波波长之比有关。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条