查询词典 contamination

The most polluted areas is near Tianjin second gasworks and around sewage river as well as sewage irrigation area. So we can conclude the major sources of pollution is atmospheric deposition and sewage irrigation. Second, It is positive correlation between the heavy-metal contamination and layered silicate minerals, while it is negative correlation between heavy-metals and quartz , feldspar as well as other minerals.

二、重金属污染元素含量与层状硅酸盐矿物含量呈正相关，而与石英长石等矿物含量呈负相关，充分说明污染元素主要赋存在层状硅酸盐矿物中，这与矿物自身的结构有着密切的关系，层状硅酸盐矿物具有很大的层间域，有利于对其他物质的吸附作用。

Asks a former director general of the ministry, when he returned in a jacket and tie for a visit last week, and heard the contamination levels register in bursts on the Geiger counter.

要求的前总干事部，当他返回，在夹克和领带进行了访问上星期，并听取了污染程度登记在扫射就盖革计数器。

In order to meet the discharge norm of the contamination concentration limit, zone generalized predictive control is adopted which transforms the conventional quadratic objective of the MPC into a linear programming with soft constraints; besides, considering the wastewater treatment plants energy-saving targets, a multi-objective predictive control is formulated and finally hierarchical multi-objective optimization algorithm is applied for on-line optimization solution.

根据污水处理过程的实际要求，为了满足氮浓度的排放标准区间要求，研究了污水处理过程的区间广义预测控制策略，把预测控制的常规二次目标转化为带软约束问题的线性优化问题；同时考虑到污水处理的能耗，在出水水质目标之上建立了能耗最小目标，得到了污水处理的多目标预测控制，最后采用分层多目标优化算法进行在线优化求解，得到污水处理过程的多目标预测控制。

A new geochemical survey may expose the extent of China's soil contamination problem.

新一轮的全国性的土壤污染状况调查暴露出污染的程度。

This procedure can effectively avoid glutenin fraction from contamination with other protein fractions generated by traditional Osborne fractionation scheme.

该方法避免了谷蛋白与传统的Osborne分级法所产生的其他蛋白质组分之间交叉污染的现象，而且快速稳定。

Once the gold-bearing rocks were brought to the surface, the rocks were crushed, and the gold was separated out, or leached out, typically by using arsenic or mercury (another source of environmental contamination).

这主要通过顺着含有金子的石英的纹路进行挖掘和爆破，一旦这些含有金子的矿石裸露出来，它们就会被碾碎，流水冲刷之下，金子就会被分离出来，也有人利用砷和水银(这是环境污染的另一来源)将金子过滤出来。

Greengrocery、carrot and wheat were cultivated on the soil taken from the DaShaHe orchard jiangsu Province to evaluate the effect by copper contamination in soils on growth of crops were evaluated.

果园铜污染土壤种植小青菜、胡萝卜和小麦的研究表明：种植在果园铜污染土壤中的小青菜、胡萝卜和小麦生长明显受抑制，生物量减少、产量降低。

By adding an equivalent harmonic impedance in the branch circuit of power grid, this HAPF could force all the harmonic currents flow into passive power filters, which resulting in eliminating harmonic contamination more effective. And using the capacitive feature of PPF in the fundamental frequency, this HAPF could compensate fixed-capacity reactive power without increasing APF's burden. Moreover, in order to decrease APF's cost, the fundamental voltage will largely be endured by capacitor in view of the series resonance circuit tuned at the fundamental frequency, so the APF just bears little harmonic voltages.

其基本工作原理是：有源部分等效于在电网支路中串联了一个谐波阻抗，该谐波阻抗对基波电流不起作用，而对谐波电流产生很大阻碍作用，迫使谐波电流流入无源滤波器，从而达到滤除谐波的目的；同时新型注入式混合有源滤波器还充分利用了无源滤波器的无功补偿功能，在不增加有源部分容量的前提下，可以提供一定容量的无功功率；由于有源部分承受的电网基波电压不大，也没有基波电流流入，因此逆变器容量小，初期投资较小。

Contamination of finer with larger grits can spoil the polishing effect.

与污染较大的磨粒精细抛光可以破坏作用。

Aflatoxin contamination of groundnut is potentially a big problem in India .

花生的黄曲霉毒素污染问题一直是印度的一个潜在大问题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。