frequency sounding instrument [地物] 频率测深仪
frequency sounding method [地物] 频率测深法
acoustic frequency sounding 声波频率测深
frequency sounding curve 频率测深曲线
frequency sounding at oblique incidence 斜向频率探测
acoustic c frequency sounding 声波频率测深
two frequency sounding instrument 双频测深仪
controlled source frequency sounding 人工源频率测深
frequency-domain sounding 频域测深 ; 频率域测深
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