evolution of attosecond pulse measurement
... A device used underwater to produce pulses of sound, as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置，如回音器中的装置 Evolution of attosecond pulse measurement 阿秒脉冲测量的研究进展 instrument for nuclear pulse measurement 核脉冲测量仪 ...
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evolution of attosecond pulse measurement
阿秒脉冲测量的发展
以上为机器翻译结果，长、整句建议使用 人工翻译 。