THSAM M multipurpose scanning acoustic microscope was developed.

研制成功了一台THSAM- M型台式多功能声显微镜。

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An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.

采用DSP软件方法，研制了一套基于MFSK调制和非相干能量检测的水声调制解调系统。

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M sequence signal can be chosen as the receiving deterministic pulse signal when using acoustic vector to determine the direction of the sound source. It possesses favorable anti-multipath capability.

利用矢量水听器接收确知脉冲信号来确定声源方位时，脉冲信号形式可以考虑采用M序列调相信号，具有良好的抗多途效应。

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The fire started around 2 a.m. after the acoustic insulation in the Kiss nightclub caught fire, said Civil Defense Col.

CNN: Fire rips through crowded Brazil nightclub, killing 233

The fire started around 2 a.m. after the acoustic insulation in the Kiss nightclub caught fire, said Silva, the regional coordinator of civil defense.

CNN: Hundreds killed in Brazil nightclub fire