There was a 30-minute timedifference between the arrival of the "bow" and "stern" waves.
在声波的“头部”和“尾端”到达之间有30分钟的时间差。
2
The delay or difference in the arrivaltime of seismic events that can result from weathering of the rocks or variations in geologic structures in the subsurface.
地震同相轴到达时的延迟或差异，这是由于岩石的风化层和地下地质体的变化产生的。
3
An algorithm used trigonometry to passively locating a moving emitter with direction of arrival (DOA) and timedifference of arrival (TDOA) of the emitter signal is given.