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- The sources of sediments mainly are terrigenous sediments,biogenic sediments and volcanic sediments in the suvey area and they are mostly from the Kamchatka Peninsula in the east of USSR and Aleutian Islands. 另外 ,该区沉积物的物源主要为陆源沉积物、生物源沉积物和火山源沉积物 ,它们主要来源于俄罗斯东部的勘察加半岛、美国的阿拉斯加半岛及阿留申群岛
- Periodical sedimentation and cementation of minerals were occurred when the life activities of cyanophyte existed, thus forming laminated biogenic sediments in limestone. 由于蓝藻等低等微生物的生命活动所引起的周期性矿物沉淀、沉积物的捕获和胶结作用,从而形成了叠层状的生物沉积构造。叠层石赋存的岩性为石灰岩。
- She scooped out the yeasty sediments. 她将发酵的沉淀物舀了出来。
- biogenic sediments 生源沉积物
- He emptied out the water barrel to clear it of sediment. 他把水桶倒空以清掉桶底的沉淀物。
- biogenic sediment 生物沉积,生物沉积物
- You should not drink the wine with a gritty sediment. 不要喝有沙粒状沉淀物的葡萄酒。
- The Quaternary sediments are largely undeformed. 第四纪的沉积物大部分未变形。
- Fermentation is a biogenic process. 发酵是一种生物化学反应过程。
- Thus perhaps even clouds and rain may be biogenic. 以此推论,甚至乎云层雨水也是由生物活动产生的。
- River sediments gradually silted the harbor. 河流的沉积物逐渐使港口淤积
- Sediments acted as a restricting control. 沉积层起着屏蔽的作用。
- Something that settles to the bottom of a fluid; sediment. 沉渣沉到液体底部的东西; 沉积物
- The sediments belong mainly to silts. 研究区沉积物主要属于粉砂。
- He scooped out the yeast sediments. 他把发酵的沉淀物舀了出来。
- What does the terrigenous sediment consist of? 陆源沉积物是由什么组成的?
- Sediment has been washed down from the upper lake. 湖泊上游带下许多沉积物。
- All sediment deposition is not injurious. 所有的泥沙淤积并不都是有害的。
- Natural sediment particles are not spherical. 天然泥沙颗粒不是球状的。
- Pelagic sediment contains tiny grain of material. 远洋沉积物包含了微细物质颗粒。