离子迁移

In the pot experiment, the lead ion concn. in the dry soils was set as 0, 100, 500, 1000, 2000 and 3000 mg/kg, the content of Pb in aerial parts and root of M. sativa and B. juncea were detected and the total migration amount of Pb, root tolerance index and enrichment coefficient were calculated.

方法］采用盆栽试验，土壤中铅离子浓度为0、100、500、1000、2000、3000 mg/kg干土，测定紫花苜蓿、印度芥菜地上部和根部的铅含量，计算铅的迁移总量、根系耐性指数、富集系数。

In a particular electrolyte,the real transport number of aluminium ions is a constant.

在同一电解质溶液中，铝离子的真实迁移分数基本恒定。

The ionic conduction of La2Mo2O9 was predominant with the electronic transference number less than 0.05 above an oxygen partial pressure of about p O2=10-7Pa at 700 ℃, and below this pressure the electronic conduction became obvious.

在700oC、氧分压高于10－7Pa条件下，离子传导占主导地位，电子迁移数低于0.05，而低于这一氧分压时，电子传导开始变得明显。

Greenhouse soils displayed apparent phenomena of salt accumulation in topsoil (0–20cm) and salt leaching downwards to the bottom of the soil (80–100cm), especially NO3- that seriously affected the quality of groundwater in the area. Apart from HCO3-, the contents of NO3-、SO42、Cl-、Ca2+、Mg2+、K+、Na+ were increased to different degree in greenhouse soils, and NO3-、SO42- and Ca2+ were the major ions in the soils.

此外，盐分离子的大量累积和向底层迁移，特别是NO3-的淋溶已严重影响到部分地区的地下水水质。4）设施栽培后，土壤中的NO3-、SO42-、Cl-、Ca2+、Mg2+、K+、Na+均有不同程度的累积，阴离子以NO3-和SO42-为主，阳离子以Ca2+为主。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。