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- Keywords Placer gold mineral Surface-growing structure Rubbing mark Surfacegrowing mineral Surface-growing chemical sedimentary deposit; 砂金矿物;表面生长结构;擦痕;表生矿物;表生化学沉积;
- chemical sedimentary deposit 化学沉积矿床
- A sedimentary deposit that results from the evaporation of seawater. 蒸发岩一种沉积岩，由海水被蒸发而形成
- The metallogenic series of sedimentaty deposist subdivided into the marine sedimentary deposit and continental sedimentary depossit. 划分了沉积矿床成矿系列；建立了海相沉积矿床和陆相沉积矿床两种成矿模式；
- It is useful in discussing the nature of sedimentary deposits. 它在讨论沉积物的性质时是有用的。
- And karst diaspore bauxite deposits belong to bioorganic sedimentary deposits. 又我国硬水铝石岩溶铝土矿,应属于生物有机质成矿作用的沉积型铝土矿。
- Ten of the examples of the failures and the solutions are listed for strong stray current along the pipeling, strong radio interference, accumulated air, sedimentary deposit and electrode materials. 最后列举了管道强杂散电流、强无线电波干扰、积聚空气、淤泥沉淀层和电极材料等10个使用故障实例和解决办法。
- organic chemical sedimentary rock 有机化学沉积岩
- The study of syntectonic sedimentary deposits is one of the advanced topics in current geological research. 同构造沉积记录研究是当前地质学研究的热点和前沿领域之一。
- Of,belonging to,or designating the geologic time,system of rocks,and sedimentary deposits of the seventh and last period of the Paleozoic Era. 二叠纪的，二叠岩的是、属于或标明为古生代第七个和最后一个阶段的地质时期、岩层及沉积矿藏。
- hydrothermal sedimentary deposit 热水沉积矿床
- Oil is formed by the decay of animal, and possibly some plant, remains in a reducing environment in sedimentary deposits. 石油是在沉积物还原环境中由动物遗骸，可能还有一些植物遗骸的分解所形成的。
- hydrtothermal sedimentary deposit 热水沉积矿床
- Of, belonging to, or designating the geologic time, system of rocks, and sedimentary deposits of the seventh and last period of the Paleozoic Era. 二叠纪的，二叠岩的是、属于或标明为古生代第七个和最后一个阶段的地质时期、岩层及沉积矿藏
- submarine exhalative sedimentary deposit 海底喷气沉积矿床
- Such kind of clay can be used as high mobility material in paper industry.And karst diaspore bauxite deposits belong to bioorganic sedimentary deposits. 又我国硬水铝石岩溶铝土矿，应属于生物有机质成矿作用的沉积型铝土矿。
- A reactor is a container for chemical reaction. 反应器是进行化学反应的容器。
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- Of, relating to, or designating the geologic time, system of rocks, and sedimentary deposits of the second period of the Paleozoic Era, characterized by the appearance of primitive fishes. 奥陶纪（系）的属于、有关或指奥陶纪（系）的，奥陶纪（系）是指古生代第二纪的一段地质时间、岩石系统及沉积物，该纪以早期鱼的出现为特征
- We are doing a chemical experiment. 我们正在做化学实验。
