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。
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。
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。
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。
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。
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。
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