scale formation

CaSO_4 · 2H_2O is one of the most common and important scale-forming minerals in oilfield produced water, but the mechanism of CaSO_4 · 2H_2O scale formation has not been revealed clearly, partly due to the lack of reliable solubility data in high salinity oilfield produced water.

二水硫酸钙是油田产出水中常见的一种成垢物质，但对高矿化度油田产出水还缺乏必要的溶解度基础数据，影响了硫酸钙结垢预测的准确性。

The reasons for scale formation are discussed concisely and 4 scale samples taken from 2 wells are analysed.

简要分析了这些采油井结垢的原因，对取自2口采油井井下的4个垢样进行了分析。

The cause of thermal crack of the "bridge" is found to be scale formation and insufficient flow of cooling water, that is verified by practical running of an engine.

找出了鼻梁处热裂的原因之一是由于水垢及水流不畅，并从实际发动机中得到证实。

The entry into the Warring States period witnessed the realization of large-scale awarding and the formation of mature awarding system in the Qin State, especially after reforms carried out by Shang Yang.

秦国真正具备了大规模的赏赐、形成成熟的赏赐制度是进入战国时期，特别是秦孝公任用商鞅实施变法后。

ATMP can decrease scale formation and inhibit corrosion of metal equipment and pipeline.

可以起到减少金属设备或管路腐蚀和结垢的作用.

A two-step turbulent combustion subgrid-scale model is employed for calculating carbon monoxide CO concentration, and the NO subgrid-scale pollutant formation model for the evaluation of the rate of NO formation. The heat flux model is applied to the prediction of radiant heat transfer.

化学反应速率由亚网格EBU燃烧模型来确定，两步亚网格紊流燃烧模型被用来确定CO浓度，NO亚网格污染物生成模型被用来评估NO生成速率，辐射热量传递采用了热通量辐射模型。

A number of quasars with redshift Z> 4 have been discovered in recent years, which provide important constraints to theoretical models for the large scale structure evolution of the universe and the formation of galaxies at early time.

近年来发现了一批Z>4的类星体，这些高红移类星体使人们对早期宇宙中的大尺度结构演化和星系形成的理论模型提出了新的观点。

Effect of CaCO_3 scale formation on heat transfer of pool nucleate boiling

CaCO3垢的形成对池核沸腾传热的影响

Reduction of CaSO_4 Scale Formation during Pool Boiling by Surface Ion Implantation

表面离子注入降低池式沸腾条件下CaSO4污垢生成

The formation of the large-scale structures in the universe is closely related to that of individual galaxies.

宇宙大尺度结构的形成与星系形成密切相关。

In pace with the perfection of performance and model number of bottom-hole power drill tool, moreover concentrated PDC bit fitting for different formation is growing vigorously, compound drilling technique can be large-scale applied and disseminated.

随着井下动力钻具性能、型号的完善，再加上适合各种地层的高效PDC钻头的蓬勃发展，复合钻井技术大规模推广应用的时代已经到来。

Effects of technical condition and material composition on scale formation were researched according to the technology properties of alumina production flow.

结合氧化铝生产工艺流程特点，研究了生产工艺条件和物料组成对结疤形成的影响；

According to the data features of exploration and development on oil gas field, the paper proposed a way for organizing and managing massive-scale formation data, making data prepared for large scale geographic spatial modeling and real time visualization.

针对油气田勘探、开发领域的数据特点，建立海量地层数据组织和管理的一种途径，为大规模的三维地质建模、实时显示作数据准备。

The kinetics of calcium carbonate scale formation has been studied based on the conductivity measurement including the rate of the nucleus formation and crystal growth as well as the influences of temperature and the scale inhibitors.

采用监测溶液电导率的方法，研究了碳酸钙的结垢速率，包括晶核生长速率和晶粒长大速率，以及温度和阻垢剂对碳酸钙结垢速率的影响。

It can prevent scale formation, calcium carbonate in particular, in water system.

可阻止水中成垢盐类形成水垢, 特别是碳酸钙垢的形成.

This paper has analyzed the application of three-dimensional visualized and animated picture simulation technology to the dynamic simulation of the formation of geological scenery, with the emphasis placed on the simulation of the formation and evolution of geological scenery at the temporal scale.

分析了三维可视化及仿真动画技术在地质景观成因动态模拟与仿真过程中的应用价值，重点论述了如何对地质景观形成演化在时间尺度上进行模拟和仿真表达。