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With microwave digestion and general digestion , the content of Pb and Cd in shrimp samples was measured by graphite furnace atonic absorption spectrometry .

采用微波消解与常规消解2种方法消解对虾样品,石墨炉原子吸收法测定其Pb、Cd的含量,对样品中Pb、Cd的微波消解与常规消解分析方法做了系统的比较。

Results show that the thermal conductivity of bonded sample is little lower to that of pure graphite materials.

结果表明,800℃热处理后的粘接样品的热导率稍低于纯石墨材料的热导率。

The effect of treating condition (form of boron used, the concentration, temperature of the solution of boride, the heat-treatment temperature) on the mechanical properties of the resulting carbon fibers was investigated.

研究了处理液组份、浓度、温度和石墨化热处理温度对最终碳纤维力学性能的影响。通过力学性能的变化评价了硼改性的效果。

Growth mechanism of boron carbide nanoropes was discussed. It has demonstrated that the substrate of graphite plays a significant role in the formation of nanoropes.

研究了绳状产物的生长机理,表明石墨基片对产物的形成有至关重要的作用。

On this basis, the graphite, eutectic cell, boron carbide of boron gray cast iron is studied. At last, the shape factor is tested and the results of the mechanical properties and metallurgical quality index are obtained.

在此基础上,研究了硼灰铸铁的石墨、共晶团以及硼碳化物组织,并进行了定量金相分析试验;同时研究了不同孕育条件对硼灰铸铁的力学性能及冶金质量指标的影响。

The new vehicle comes with the designo metallic graphite paint finish but also with the new AMG sports package with new front and rear aprons, side skirts and sports pedals of brushed stainless steel with black rubber studs, plus painted brake callipers with Mercedes-Benz lettering.

新的汽车配备designo石墨金属漆,而且也与新的AMG运动套件新前后围裙,侧裙和运动踏板的拉绒不锈钢与黑色橡胶钉,加上画制动卡钳与奔驰刻字。

A 125W UV lamp (365nm) was used as light source. The photoelectrochemical system consisted of three electrodes. As follows, Ti/TiO2 thin film was used as the working electrode, graphite electrode as the counter electrode and saturated calomel electrode as the reference electrode. Methyl orange was used as the objective substance. The photoelectrocatalytic degradation of Methyl orange on the Ti/TiO2 thin film was studied .The effects of some factors such as external bias potential, ventilation were also observed.

并以125W紫外线高压汞灯为光源,Ti/TiO2薄膜为工作电极,石墨电极为辅助电极,饱和甘汞电极为参比电极,建立了三电极的光电催化体系,甲基橙溶液为降解对象,并对其在Ti/TiO2薄膜电极上的光电催化降解进行了研究,观察外加电压、通空气等外加因素对甲基橙降解速率的影响。

Comparison was carried out to the conductance of copper graphite material made with traditional method.

为了改善金属石墨电刷的滑动磨损性能,在其中添加少量的铅、锡等低熔点金属是常用的方法[1] 。

To investigate the relationship between dandification mechanism of SiO2 particles and materials performance under different friction speeds, Cu-graphite-SiO2 sintered materials were prepared through powder metallurgy. The tests were conducted on a pin-on-disk tester in speed range of

摘 要:采用粉末冶金技术制备铜石墨SiO2烧结材料,利用销盘式摩擦试验机,在摩擦速度为7.8~47.1 m/s的范围内,研究SiO2在不同摩擦速度条件下的损伤机理及其与材料性能的关系。

To develop a new method based on matrix solid-phase dispersion extraction with basic aluminum oxide-graphitized carbon black to determine abamectin in different vegetables. The abamectin was analyzed by HPLC/MS.

寻找一种新的样品前处理法-基于碱性氧化铝-石墨化炭黑的基质固相分散法,并将该方法用于不同蔬菜中阿维菌素的残留分析,HPLC/MS分析检测。

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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。

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