... diffraction-limited lenses 绕射极限透镜 diffraction-limited system 受绕射限制系统 diffraction-limited diameter 衍射极限直径 ...
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In the a high frame rate (HFR) ultrasonic imaging system, the weighting process by limited diffraction beams on echo signal takes the most of the calculation time for constructing an image.
在高帧率超声成像算法中，对回波信号进行有限衍射波束加权处理占用了成像中大部分计算时间。
When the system close -loop controlling is realized for lower frequency perturbation, the approximate diffraction limited line spread function can again be achieved on the image plane.
对于低频扰动，当系统实现闭环控制后，像面上线扩散函数已接近衍射极限。
Laser transmitting wavefront is near diffraction-limited in space laser communication. Wavefront measurement is the basis of system adjustment and testing.
空间激光通信中发射波面质量接近衍射极限，测量波面是调整和检验发射系统的依据。
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