查询词典 precipitation

If using modified polyacrylamide as the precipitation accelerator to flocculate the polyaluminum chloride after the pre-sedimentation,it can accelerate the deposit of calcium aluminate.After deposit for 1 h,the separation effect was good.

采用改性聚丙烯酰胺作为促沉剂，对预沉后聚氯化铝溶液进行絮凝，加速铝酸钙的沉降，沉降1 h后达到了良好的分离效果。

And, this process can enhance performance of coagulation and flocculation precipitation and decrease coagulation agent inlet.

由于高锰酸钾的预氧化作用，降低了常规工艺中的预加氯量，三氯甲烷的含量明显降低。

The model of folded plate flocculator is the test object in this paper. Using the the mechanism and dynamic of coagulation precipitation, vortex of fluid of folded plate flocculator impacting on the coagulation process is studied by test, numerical simulation and theoretical analysis.

论文以折板絮凝池模型为试验对象，结合絮凝机理，采用试验测试、数值模拟及理论分析相结合的方法，对影响絮凝沉淀过程的折板絮凝池中水流涡旋进行了研究。

A flocculent mass formed in a fluid through precipitation or aggregation of suspended particles.

一种就是微小的灰尘粒子或悬浮在液体中的胶粒。

The dissertation has upstanding reference value to underwater geomorphological measurement system, for instance reservoir region, lakes, as well as measuring the flotage and underwater precipitation.

本论文对于水库、湖泊等水下地形地貌测量具有良好的参考价值，也可用于海洋探测及对水中漂浮物或水下沉淀物的测量。

The scaling on equipment and pipeline of WPA filtration unit is caused by the precipitation of potassium and sodium fluosilicate when the temperature of acid decreases.

分析湿法磷酸过滤设备与管道结垢的主要原因是氟硅酸钾，钠盐因磷酸液相温度下降而沉积下来。

The countermeasure is to introduce additives, refraining or inducing the precipitation of potassium and sodium fluosilicate. 5 additives are found effective and the desirable one is E, 70% anti-scaling efficiency scales can be avoid at the dose of 0.5 g/100 g phosphate rock.

提出采用添加剂，抑制或提前析出氟硅酸钾，钠盐，同时进行了5种添加剂的实验室研究：均有较好的阻垢效果，但最终选择添加剂E，阻垢率可达70%以上，添加量以0.5 g/100 g磷矿为宜。

In order to analyze the asymmetrical causation of precipitation distribution, NCEP reanalysis data are used to calculate water vapor flux vector of the vertical integration.

为了分析产生降水非对称的原因，又利用NCEP(the National Centers for Environmental Prediction)再分析资料计算了垂直积分的水汽通量矢量。

Mineralogy of francolite and relations between francolite and precipitation of uranium minerals.3 The role of reducing gases in uranium metallogenesis.4 Relations between mantle fluids and mineralizing solution.5 Experimental studies on uranium metallogenesis.

水云母在铀成矿作用过程中起了富集铀的作用，相山矿田范围内蒙脱石向伊利石的演化过程是一个动态的平衡过程且这一演化主体停留在I/S混层矿物阶段的事实很好地解释了相山矿田中铀矿床类型以群脉型矿床为主的特征。

The effects of friction in surface layer on the structure of front and the frontogenesis in boundary layer, the interaction of orographic disturbance with front, the influence of diabatic process and moist process on the frontogenesis are investigated. Second, the occurrence and development of frontal rainbands have been studied extensively through the observational and theoretical approaches near half-century. However, there are still some problems needing further investigations because of the complication of the precipitation process.

关于锋面降水的产生和分布问题，近半个世纪以来，国内外气象学家进行了大量的观测和理论研究，但是由于问题的复杂性，至今仍有许多问题不清楚，我们利用非静力模式对变形场锋生条件下锋面雨带的发生、发展和演变过程进行了数值模拟和分析。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐