基本解释深海沉積物；深海堆積英汉例句雙語例句The Upper Triassic Formation is sub-abysmal basinal facies deposit in the south and north depressions. A black shale layer developed.上三曡統在南、北坳陷爲次深海盆地相沉積，發育一套黑色頁巖烴源層；abysmal deposit更多例句专业释义化學深海沉積物土木建築工程深海沉積