陆架浅海沉积物—海水界面上的溶解态生源物质通量的准确估算是海洋生态系统动力学研究中的关键性问题之一。
One of the key issues in the marine ecosystem dynamics studies is to accurately estimate the dissolved biogenic substance flux across the sediment-seawater interface in the shelf sea.
我们可以看到，现在的湖底或浅海底部的沉积物中形成了波痕。许多沉积岩都含有类似这种波痕的特征。
Many sedimentary rocks contain such features as ripple marks, exactly like those we can see forming in sediments at the bottom of present-day lakes or shallow seas.
它们在浅海的沉积物中扭来扭去，把猎物吞进袋状的微小躯体里，把水从嘴巴周围的圆锥形喷口排出去。
They wriggled around in the sediments of shallow seas, gulped prey into their minuscule, baglike bodies and expelled the water through cone-shaped spouts around their mouths.
一般为玄武岩、页岩发育的土壤可提取态钛含量高于花岗岩、砂岩、浅海相沉积物发育的土壤；
In general, contents of extractable Ti of soils from basalt and shale are higher than those from granite, sandstone, and shallow sea deposits;
天然气水合物是在低温高压环境下由水分子和气体分子构成的结晶状特殊固体化和物，它主要分布于永久冻土带及浅海大陆架及深海平原沉积物中。
Natural Gas Hydrate occurs at conditions of low temperature and high pressure, it is a special solid crystal compound composed of natural gas molecule and water molecule.
海底沉积物作为声在浅海中传播的下边界，不同底质的海底对声波在波导中的传播具有重要的影响。
Marine sediment is the reflecting boundary of the shallow sea, and the sound wave in the wave-guide of the shallow sea is greatly influenced by the Marine sediment.
海底沉积物作为声在浅海中传播的下边界，不同底质的海底对声波在波导中的传播具有重要的影响。
Marine sediment is the reflecting boundary of the shallow sea, and the sound wave in the wave-guide of the shallow sea is greatly influenced by the Marine sediment.
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