Multichannel sparker recording has recently come into use for shallow-penetration . 多道火花发生器记录系统，最近开始已在浅层勘测中应用。
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The sparker was originally developed for fundamental studies of underwater sound propagation and of subbottom geology . 火花发生器原来是为了进行关于水下声波传播及海底地质的基础性研究而制造的。
