砷

According to the problem of the long processing time and testing cycle for food measurement, the feasibility of using one microwave digestion solution to investigate seven elements in food was discussed.

摘 要：针对食品检测前处理时间和检测周期过长的难题，用硝酸及双氧水作为消解溶剂，在设定的微波消解条件下，可以将样品消解完全，消解液中加入硫脲和L盐酸，不需任何处理可直接进行砷等7种元素的测定。

The carbon compounds sink in the pondwater and seep underground where bacteria digest them, setting up the perfect chemical conditions to free up the soil's arsenic.

碳元素在池水中沉降并渗入地下，在那里他们被微生物分解，为土壤中砷的释放提供了绝佳的化学反应条件。

The constant current coulometry as a primary method is recognized in international. Based on Faraday's law of electrolysis, it has been successfully used to determine purity of arsenic trioxide. The measuring results depend directly on the reliability of measuring physical quantities and fundamental constants expressed in SI units, and do not need a reference material for comparison.

高精密库仑滴定法是国际上公认的基准测量方法，该方法根据法拉第电解定律，通过质量、电阻、电动势、时间等基本物理量及法拉第常数来进行三氧化二砷纯度的测定，直接溯源到国际SI单位，不需要用标准物质进行比对。

An automatic system for the measurement of two-dimensional distribution of resistivity of semi-insulating gallium arsenide wafer with three electrode guard method is presented in this paper.

本文介绍了三电极保护法半绝缘砷化镓材料电阻率二维分布自动测量系统，在实际应用中，温度波动、异常数据对测量结果产生严重影响，为此我们提出了一些措施。

Sub-band high-speed circuits of the past are the use of silicon bipolar and gallium arsenide process design, they have a certain speed on appeal. However, leads the prevalence of large and expensive power shortcomings.

高速的分频电路过去大都采用双极性硅工艺和砷化镓工艺进行设计，它们在速度上有一定的吸引力，但普遍存在功耗较大及价格昂贵的缺点。

For satellite applications, EMCORE offers high-efficiency compound semiconductor-based gallium arsenide solar cells, covered interconnect cells and fully integrated solar panels.

卫星应用， EMCORE提供高效率的化合物半导体的砷化镓太阳能电池，包括互连细胞和完全集成的太阳能电池板。

Tailored specifically for the micro-electronics industry for silicon, gallium arsenide, indium phosphide substrate, such as 6 "8" plate to check the production process; can easily transfer the rapid and accurate inspection of the displacement; also can be applied to other larger specimens need to check the process.

专为微电子行业量身定做，适用于硅、砷化镓、磷化铟等基片6"8"盘的生产工艺检查；可以方便的快移和精确的位移检查；也可以适用其它需较大面积标本的工艺检查。

Gallium Arsenic is one of important semiconductor materials that is widly used in RF/microwave applications.

砷化镓是一种重要的半导体材料，广泛应用于射频微波领域。

A ductile silvery metallic element that is resistant to corrosion used in alloys occurs in pentlandite and smaltite and garnierite and millerite .

一种硬而软的银色金属元素，可锻造，抗腐蚀，用于合金中，见于硫镍铁矿，砷钴矿，硅镁镍矿，针镍矿中。

A hard malleable ductile silvery element that is resistant to corrosion used in alloys occurs in pentlandite and smaltite and garnierite and millerite .

一种硬而软的银色元素，可锻造，抗腐蚀，用于合金中，见于硫铁矿，砷钴矿，硅镁矿，针矿中。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。