海底底质 marine sediment; SBC; bottom material
海底底质分类 Seabed classification
海底底质区分 Seafloor classification
腐植质植物 humus plant
半深海海底 bathyal; bathyal zone
渤海海底土样 soil of Bohai seafloor
次深海的半深海海底 bathyal
粉砂质海底 silty seafloor
海底腐殖质 submarine humus
海底海流计 bottom-mounted current meter
海水腐植质 Humic substances in seawater
海中腐植质 marine humus
近海海底管线 offshore work pipeline
可回收海底海流计 retrievable bottom-mounted current meter
南海海底扩张 subsea spreading of South China Sea
浅海海底管线检测艇 pdm-uv
浅海海底光缆 shallow submarine cable
日本海海底电缆 japan sea cable
深海海底 deep seafloor