砷

The inventive has excellent activity of diolefin hydrogenation and selectivity, sulfur resistance and arsenic resistence, extremely excellent pyrolysis gasoline selective hydrogenation performance, can meet the process requirements of pyrolysis gasoline selective hydrogenation.

本发明的催化剂具有优异的双烯加氢活性和选择性，以及抗硫和抗砷能力，具有十分优异的裂解汽油选择性加氢性能，能够适应裂解汽油选择性加氢的工艺要求。

If Fe/As≥10, the effluence concentration is 0.5mg/L below, it is such a big diseconomy.

当Fe／As≥10时，出水含砷在0.5mg／L以下，但这在处理成本上很不经济。

It is an extremely important semiconductor; doped with boron , phosphorus, or arsenic, it is used in various electronic circuit and switching devices, including computer chips, transistors, and diodes.

硅是一种非常重要的半导体；掺入硼、磷或砷后，可用于各种电子电路和开关器件，包括计算机芯片、晶体管和二极管。

It is an extremely important semiconductor; doped with boron, phosphorus, or arsenic, it is used in various electronic circuit and switching devices, including computer chips, transistor s, and diodes.

硅是一种非常重要的半导体；掺入硼、磷或砷后，可用于各种电子电路和开关器件，包括计算机芯片、晶体管和二极管。

The druggist asks:"Ma'am, what do you want with arsenic?"

药剂师问道："夫人，你想要用砷做什么？"

Recently, great advances were accomplished with arsenic trioxide in the treatment of APL. It has been revealed that As〓O〓 has dual effects on APL cell line NB〓 cell: inducing of apoptosis and improving of partial differentiation.

近年来，国内外学者运用三氧化二砷治疗APL取得了较大进展，研究发现As〓O〓对APL细胞株NB〓细胞具有诱导凋亡和促进不完全分化的双重效应。

A conclusion is drawn that the earthworm is a kind of good bioindicator for roxarsone contamination in soil.

砷是动物体必需的一种微量元素，具有多种重要的生理功能和药理作用。

Using the extended relativistic multi-configuration Dirac-Fock theory and the general-purpose relativistic atomic structure program 2(GRASP2) with quantum electrodynamical effect and breit correction, we have calculated the energy level structures, transition wavelengths, transition probabilities, oscillator strengths, energy level lifetimes, level widths and ionic average lifetimes of As-like Au~(46+), Ge-like Au~(47+) and Fe-like Au~(53+).

根据扩展的全相对论多组态Dirac-Foek理论，采用"多功能相对论原子结构程序GRASP~2(General-Purpose Relativistic Atomic Structure Program 2，1992)"，考虑量子电动力学效应和Breit修正，计算了激光金等离子体中类砷金Au~(46+)，类锗金Au~(47+)和类铁金Au~(53+)的能级结构、跃迁波长、跃迁几率、振子强度、能级寿命、能级宽度和离子平均寿命。

ABSTRACT Because of its high photoemission performance, gallium arsenide negative electron affinity photocathode has been develo...

砷化镓负电子亲和势光电阴极由于优异的性能，自60年代发现以来，获到了迅猛发展和广泛研究。

ABSTRACT Because of its high photoemission performance, gallium arsenide negative electron affinity photocathode has been developed rapidly and researched widely since it was found in 1960's.

砷化镓负电子亲和势光电阴极由于优异的性能，自60年代发现以来，获到了迅猛发展和广泛研究。

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