blast signal造句

• Based on the character of short - time non - stationary random signal , the feature of energy distribution of multi - interval - time in millisecond blast signals was investigated by means of the wavelet packet method
  摘要根据爆破振动信号具有短时非平稳的特点，利用小波包分析技术对满足分析要求的多段微差爆破振动信号的能量分布特征进行研究。