查询词典 purification

Objective To study the conditions and effects of purification of the extract of Ligusticum chuanxiong Hort. by adopting macroporos resin.

目的 探讨大孔吸附树脂对川芎提取物的纯化条件及纯化效果。

The extraction and purification technology of P. Lobata isoflavone and puerarin from extracting solution was studied.

研究了从葛根提取液中分离葛根异黄酮和提纯葛根素的工艺条件。

With increasing of human being's activities on farming and watering, it has great theoretical and practical significance on how to utilizing purification function of loessial soil to protect groundwater from polluting, which is the basis of building item of this paper.

在人类农事活动和水事活动日益增强的情况下，如何利用包括土壤层在内的黄土地层自身的净水作用，保护地下水不受污染，具有重大的理论和实际价值，这是本论文的立项依据。

With increasing of human beings activities on farming and watering, it has great theoretical and practical significance on how to utilizing purification function of loessial soil to protect groundwater from polluting, which is the basis of building item of this paper.

在人类农事活动和水事活动日益增强的情况下，如何利用包括土壤层在内的黄土地层自身的净水作用，保护地下水不受污染，具有重大的理论和实际价值，这是本论文的立项依据。

By leaching experiment in soil columns, the purification and migration characteristics of arsenic in loessial soil were stud-ied.

通过土柱淋滤试验，从动态角度研究了黄土性土壤对砷的净化作用及迁移规律。

There is representative meaning to researching the action of Cr and As in loessial soil.(3) By experiments the paper reveals purification mechanism and ability and its influencing factors of soil to Cr and As.

2分析了由于农事和水事活动所发生的土层入渗水中的污染元素，确定了毒性强、数量大、易迁移的铬、砷作为主要研究对象，研究其在黄土类土中的行为作用有代表性意义。

By the leaching experiment of soil column, the purification of loessial soil to Cr and its migration characters were studied from dynamic researches.

通过土柱淋滤试验，从动态角度研究了黄土性土壤对Cr的净化作用及迁移规律。

By the leaching experiment of soil column, the purification of loessial soil to Cr and its migration characters were studied from dynamic researches.

通过土柱淋滤试验，从动态角度研究了黄土性土壤对Cr的净化作用及迁移规律。研究结果表明：黄土性土壤对Cr是逐步地均匀地吸附的，直到吸附饱和。

With increasing of human being's activities on farming and watering, it has great theoretical and practical significance on how to utilizing purification function of loessial soil to protect groundwater from polluting, which is the basis of building item of this paper.

地下水是黄土地区重要的水资源。

When concentration of Cr and As is less than 10.0mg/Lin sewage infiltration fluid, the purification depths of Cr is 5m, and that of As is 1.5m in loessial soil.

5研究了Cr和As与营养元素钙、镁、磷及它们相互之间的交互作用。

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。