准金属

重金属元素汞和准金属元素砷在环境科学中均在有毒重金属之列。

Heavy metal mercury and metalloid arsenic are listed toxic elements in environmental science .

砷是一种具有毒性的准金属元素。

The Arsenic belongs to toxic semi - metal element .

通过第一性原理的理论计算，作者发现该材料的导电性质随体积增加有很大变化：从半金属态到准金属态，最后成为半导体。

Based on a first-principles calculation we observe that there is a transformation in the conduction properties associated with the volume increase , first from half-metallic to semimetallic , then ultimately to semiconducting .

测金属丝杨氏模量的实验，都是围绕如何测准金属丝在外力作用下的伸长量而设计的，传统的方法是利用光杠杆去测量。

The experiment of measuring Young 's modulus of the wire silk , centres on how to design for measuring elongation of wire silk under outside force by the square , The traditional method is to make use of the light lever to measure .

通过穆斯堡尔谱、振动样品磁强计和提拉样品磁强计对Cu／Fe一维准周期金属超晶格（OQPMSL）样品的磁性进行了研究。

The magnetism of the Cu / Fe quasi periodic super lattice has been studied by using Moessbauer spectrum , vibrating sample magnetometer and Czochralski magnetometer .

其工艺是：先合成准一维金属氧化物半导体纳米材料；

A process comprises that : firstly , the quasi-one-dimensional metal oxide semiconductor nano-material is synthesized ;