Atmospheric precipitation

Alcohol precipitation is an efficient method for separation and purification of xanthan gum.

分离提纯黄原胶是黄原胶工业化生产黄原胶的关键工序之一，直接决定黄原胶产品的质量，并对黄原胶生产成本有重要影响。

10A, specially in 90 s the increasing temperature trend are extremely obvious, it is the wannest year in 1999 in 50 years, it is warm period before Middle 70 s and cold period after middle 70 s. The precipitation showed the trend of obvious reduced(- 15. 1mm/10a).

以70年代中期为界，将山西分为冷、暖两个阶段，前期为冷期，后期为暖期。50年来降水量呈明显减少趋势(-15.1 mm／10 a)。

In Chinese monsoon region, precipitation and high temperature often occur in the same season, which, together with the shallow lake water, is the main reason why sediment varves scarcely exist in Chinese lakes.

通过本论文的研究，得出了如下主要结论和新的认识：1。雨热同季的季风气候和湖泊水深较浅可能是导致我国湖泊缺乏清晰年纹理的根本原因。

Rare-earth doped borates(BO3),phosphates(PO4),vanadates(VO4), vanado-phosphate(YO4),borosilicate(LaBSiO5), and aluminate phosphors had been prepared by some different methods, such as high temperature solid state method, hydrothermal method, co-precipitation method and so on.

中文摘要：采用高温固相法、水热法、共沉淀法等不同方法制备了一系列掺稀土的稀土正硼酸盐BO3、正磷酸盐PO4，矾酸盐VO4，矾磷酸盐YO4和硼硅酸盐LaBSiO5及铝酸盐等荧光粉。

Rare-earth doped borates(BO3),phosphates(PO4),vanadates(VO4), vanado-phosphate(YO4),borosilicate(LaBSiO5), and aluminate phosphors had been prepared by some different methods, such as high temperature solid state method, hydrothermal method, co-precipitation method and so on.

采用高温固相法、水热法、共沉淀法等不同方法制备了一系列掺稀土的稀土正硼酸盐BO3、正磷酸盐PO4，矾酸盐VO4，矾磷酸盐YO4和硼硅酸盐LaBSiO5及铝酸盐等荧光粉。

This study deals with typhoons that influence China and focuses on their impact on China's precipitation.

本文目的是研究那些对中国产生影响的台风并重点关注台风对中国降水的影响。

This study deals with typhoons that influence Chinaand focuses on their impact on China's precipitation.

本文目的是研究那些对中国产生影响的台风并重点关注台风对中国降水的影响。

Precipitation of calcium oxalate in the renal tubules can lead to renal failure.

草酸钙在肾小管中析出可导致肾小管功能紊乱。

It is believed that the gold precipitation form the ore-forming fluids might be trigged by the reduction of the organic matters.

实验研究表明，卡林型金矿成矿流体中Au的沉淀可能与有机质的还原作用有关。

It is difficult to study directly ore-forming hydrogeochemistry of sandstone type uranium ore in arid area, therefore, author have found out the laws of solution, precipitation and migration of uranium minerals in the groundwater using the mechanism of water rock interaction and uranium, thorium and their isotopic ratios, and have probed into the relation between uranium ore-forming hydrogeochemistry condition, hydrogeochemistry environment and uranium ore-body fixed position by studying the epigenetic hydrogeochemistry trackways in the rock.

由于干旱地区对砂岩型铀矿成矿水文地球化学研究困难，难以取水样直接研究。因而在研究方法上，作者运用水岩相互作用原理和铀钍及其同位素比值，查明地下水中铀矿物溶解、沉淀和迁移规律；通过研究岩石中留下的水文地球化学形迹，探讨铀成矿水文地球化学条件、水文地球化学环境及其与铀矿体定位的关系。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。