Objective to evaluate the treatment effect of using the double frequency Laser 532 to treat the pathological changes of retina due to diabetes before proliferation.
目的评价倍频532半导体激光器治疗增殖前期糖尿病视网膜病变的疗效。
The experimental results indicate that the signal intensity is not strong enough when using quadruple frequency laser probe. Therefore, we choose double frequency laser as the probe.
实验发现采用设计的四倍频激光探针时，探针信号强度不够，因此改用二倍频激光探针。
It is a self frequency double laser in some hosts.
选择合适的基质，可产生自倍频可见激光。
Objective: To observe the effect of double frequency YAG laser in treating pterygium.
目的：观察倍频y AG激光治疗早期翼状胬肉的临床效果。
In this spectroscopy, both laser frequency and Zeeman effect of a sample are modulated, and then the signal with high signal to noise will be obtained by double demodulation.
它同时对激光频率和样品的塞曼效应进行调制，然后通过双解调来提取微弱的光谱信号。
The principle of a frequency stabilizing unit and its power circuit for a double longitudinal mode laser are introduced.
介绍一种双纵模激光器的稳频装置原理及其电源电路。
Objective To evaluate the efficacy, safety, and clinical application of double-frequency laser lithotripsy in the treatment of complicated biliary stones.
目的探讨双频激光碎石技术在治疗复杂性胆管结石中的疗效、安全性及应用价值。
In this paper the distortion of image collimating system is analyzed, and then an on-line self-calibration method with double-frequency laser length measuring result as length datum is presented.
通过对图像瞄准系统中的畸变分析，提出以激光长度测量值作为长度基准的成像系统在线自标定方法。
Objective To evaluate the efficacy and safety of double-frequency laser lithotripsy under endoscope in the treatment of refractory biliary stones.
目的探讨双频激光碎石治疗腔镜外科难取性胆管结石的疗效及安全性。
A double-frequency laser interferometer was applied for the accuracy reliability experiments in order to put forward countermeasures of increasing the accuracy reliability of the transmission system.
工程应用表明，传动系统精度可靠性设计比普通的精度设计方法更接近工程实际。
A double-frequency laser interferometer was applied for the accuracy reliability experiments in order to put forward countermeasures of increasing the accuracy reliability of the transmission system.
工程应用表明，传动系统精度可靠性设计比普通的精度设计方法更接近工程实际。
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