focal depth determination
focal depth determination
震源深度测定
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The important factors for laser depth-microdrilling are the sufficient power density, suitable focal length, determination of the best image plane and refocusing etc.
足够的功率密度、用适当的焦距并确定最好象面、再聚焦方法等是激光深微孔加工的重要因素。
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