The sulfide content of bottom sediments is one of the most important environmental indexes.
底质中的硫化物含量是一项重要的环境指标。
The decrease of fluvial sediment to the estuary has led to coarsening of bottom sediments in the modern delta and shrinking of modern depocenter.
现代沉积区沉积中心面积的减少，表明锋带沉积作用的减弱。
In the normal water phase, the remaining Phosphorus makes its way, settles to the bottom of the ocean, and gets mixed into ocean sediments.
在正常的水相中，残留的磷会自己移动，沉淀到海洋底部，并混合到海洋沉积物中。
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.
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。
The trend of decrease in mercury content is seen from sediments upwards to bottom seawater, surface seawater, and sea-surface air.
见有汞异常浓度由沉积物向上经底层、表层海水到海面大气渐次降低的趋势。
The authors introduce the research results of identifying gas hydrate from sediments, bottom water and lower atmospheric layers.
综述了从沉积物、底水和低层大气三维空间进行天然气水合物地球化学识别方法的研究成果。
This article proves the genesis of Kanasi lake from the respects of geologic structure, landforms, formation of lake bottom and analysis material of sediments in laboratory.
本文从地质构造、岩石结构、地貌、湖底形态及室内沉积物分析资料几个方面论证了喀纳斯湖的成因。
Pertaining to sediments or environments in seas or ocean waters, between the depth of low tide and the ocean bottom.
系指介于低潮面和洋底之间深度的海水或大洋水中的沉积物或沉积环境。
After placement of the bottom stopper, the valve on the top stopper was closed and the core was withdrawn from the surrounding sediments.
塞上底端的塞子后，关上顶端塞子上的阀门，之后将样品柱从周围沉积物中拉出。
After placement of the bottom stopper, the valve on the top stopper was closed and the core was withdrawn from the surrounding sediments.
塞上底端的塞子后，关上顶端塞子上的阀门，之后将样品柱从周围沉积物中拉出。
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