例句與造句

1. in this paper, ree are used to trace the core q43 sediment samples from the outer shelf of east china sea
   本文通過(guò)對(duì)東海外陸架q43柱樣沉積物進(jìn)行稀土元素分析，利用其稀土元素組成特征來(lái)討論物質(zhì)來(lái)源。
2. beneath the relic sand of the outer shelf there is high grade of valuable heavy mineral sand ( for example ilmenite ) reaching the ii anomaly order of marine placers and it is of potential resource prospects
   通過(guò)碎屑礦物判斷，原巖應(yīng)是中酸性巖漿巖和淺變質(zhì)巖類(lèi)。鈦鐵礦等有用礦物在細(xì)砂層位中出現(xiàn)較厚的砂礦異常，顯示一定的淺海砂礦資源潛力。
3. It's difficult to find outer shelf in a sentence. 用outer shelf造句挺難的