查询词典 cadmium

The optimal pH, which was the major factor influencing the adsorption of cadmium, was around 6.0; and the higher concentration of cations such as K~+, Na~+, Ca~(2+), Mg~(2+), the lower the sorbing capacity of the microalgae; This effect, on the other hand, also illustrated that the ion-exchange was the main adsorption mechanism.

衣藻和固定化衣藻对重金属镉的吸附在pH6.0左右达到最佳吸附，但pH的变化对衣藻吸附镉的影响较大；固定化衣藻则在极低pH值下吸附受到显著影响，在pH3-8的范围内，所受影响不大；背景阳离子的存在对二者吸附的影响非常显著，这从另一方面证明了离子交换为衣藻生物吸附的主要机制。

The millimetersized tubular crystal selenium was first prepared. By studying the process of treating selenium in ethylenediamine, we proposed the mechanism of the preparation of selenides under solvothermal condition. The selenides came into being from the reaction of metal ions with Se〓, which was obtained by the amine attacking selenium. Moreover, a new precursor to prepare nanocrystalline selenides at room temperature was obtained. From this precursor, we have prepared nanocrystalline silver selenides, copper selenides, lead selenides and cadmium selenides nanorods.

首次报道了采用溶剂热处理的方法制备出厘米尺度的管状结构硒晶体；通过对硒粉在乙二胺中的溶剂热研究，初步探讨了以单质硒为硒源的溶剂热合成硒化物的反应机理应是硒受胺类的亲核进攻变成Se〓而进一步形成相应的硒化物；获得了合成硒化物纳米晶的前驱物，并在室温条件下合成了硒化银、硒化铜、硒化铅纳米晶和硒化镉纳米棒等。

A pot experiment was conducted for comparing effects of soil amendments with peat, wood bits, organic manure and rice straw on cadmium accumulation in Brassica parachinensis cultivated in Cd contaminated and uncontaminated soil.

通过盆栽试验比较了在不同镉污染程度的土壤条件下种植菜心，施用泥炭、木屑、有机肥和稻草秸杆等有机物料后，对抑制菜心吸收镉的效果。

Some new processes and technologies for electronics finishing were introduced, such as wafer plating, electrochemical mechanical polishing, microelectro-mechanical system plating, copper plating using insoluble anode, platinized niobium electrode, lead and cadmium free eleclroless nickel, recycling of alkaline etching solution and reclaiming system of copper.

介绍了电子电镀中的若干新工艺新技术，如芯片电镀、电化学机械研磨、微机电系统电镀、不溶性阳极电镀铜、镀铂铌电极以及无铅无镉中磷光亮化学镀镍、碱性蚀刻液再生和铜回收系统等。

Some new processes and technologies in electronics finishing such as wafer plating, eCMP,MEMS plating, lead and cadmium free electroless nickel,copper plating using insoluble anode and recycling of etching solution for PCB industry and platinized niobiumelectrode are briefly introduced.

文对电子电镀中若干新工艺新技术如芯片电镀、化学机械抛光、MEMS 电镀、PCB 工业中采用不溶性阳极电镀铜工艺以及铜蚀刻液回收再生、无铅无镉化学镀镍、镀铂铌电极等进行了简要介绍。

Some new processes and technologies in electronics finishing such as wafer plating, e CMP ,MEMS plating,lead and cadmium free electroless nickel,copper plating using insoluble anode and recycling of etching solution for PCB industry and platinized niobiumelectrode are briefly introduced.

文对电子电镀中若干新工艺新技术如芯片电镀、化学机械抛光、 MEMS 电镀、PCB 工业中采用不溶性阳极电镀铜工艺以及铜蚀刻液回收再生、无铅无镉化学镀镍、镀铂铌电极等进行了简要介绍。

Effects of calcium magnesium phosphate and silicon fertilizer (Na 2SiO 3) on the growth and the uptake of Cd, Pb, Zn, Cu, Mn, Fe, N, P and K by pakchoi were studied through pot experiment with cadmium, lead, and zinc contaminated soil.

采用盆栽方法研究在 Cd、Pb、Zn污染的酸性土壤上，钙镁磷肥和硅肥对小白菜生长及污染元素和养分元素(N、P、K、Mn、Fe、Cu)吸收的影响。

Do not use lithium ion , nickel cadmium nicad , or carbon zinc batteries .

第三条：只使用碱性电池，不要使用锂电池，镍镉电池，碳素电池，锌电池。

Nicad battery 镍镉电池,nickeI-cadmium battery

的简称，可再充电的电池

ResultThe result showed that compared with our country sludge agricultural use's standard, the content of the chromium, the cadmium, the nickel, and the copper wdid not surpass the permission level in three kinds of sludge samples. But in the yellow clay the zinc content exceeded the allowed figure seriously, both white clay and black clay reached the standard.

结果］与我国污泥农用标准相比，铬，镉，镍，铜4种重金属在3种污泥样品中的含量都没有超过允许的水平，但锌在黄泥中的含量严重超标，在白泥和黑泥均达到标准。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。