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- The specification for lead impurity content in lead-free solder content is under 500ppm. 规范中规定无铅焊锡膏内容物中铅杂质的内容物含量不得超过500ppm。
- Main component self-compare with calibration factor can be used when testing impurity content. 测定杂质含量时,可采用加校正因子的主成分自身对照法。
- A new test method, in which alkyne impurity content in 1,3-Butadiene is determined by a capillary gas chromatograph,was introduced. 介绍了一种毛细管气相色谱法测定1,3-丁二烯中炔烃杂质含量的新试验方法。
- The tail gas of sodium hexametaphosphate is characterized by high temperature,complicated ingredients,high impurity content and strong corrosiveness. 六偏磷酸钠尾气温度较高,所含成分复杂,杂质含量高、腐蚀性强。
- The hydrocracking tail oil possesses the characteristics of higher viscosity index,pour point,viscosity and lower sulfur,nitrogen,impurity content. 加氢裂化尾油粘度指数高,低硫、低氮、杂质含量少,倾点和粘度偏高。
- This method can only be applied to roughly test impurity content of test samples due to relatively big deviation produced by peak area normalization method. 由于峰面积归一化法测定误差大,因此,本法通常只能用于粗略考察供试品中的杂质含量。
- Thus , in the process of sample test , the impurity content of sulbactam penicillamine could be determined by the main component auto-compare with calibration factor . 在样品测定过程中,即可采用加校正因子的主成分自身对照法测定舒巴坦青霉胺杂质的含量。
- The iron ore from Dongchuan Baozipu,Yunnan has complex properties.It contains hematite and limonite that are valuable minerals and high impurity content of both phosphorus and silicon. 云南东川包子铺铁矿石性质复杂,有用矿物为赤铁矿和褐铁矿,杂质磷和硅含量较高,磷主要以胶磷矿或类质同象形式赋存在赤铁矿和褐铁矿之中,属高磷难选赤褐铁矿石。
- The impurity contents accorded with GB10576-89.The Li_2CO_3contents were beyond 99.9%. 经检测Li_2CO_3产品中杂质含量符合高纯Li_2CO_3国家标准GB10576-89的要求;主含量在99.;9%25以上。
- During polishing, it feels unsmooth (because its hardness is greater than iron), but there are less impurity contents, almost no breach. 在研磨过程中发现涩手(因为硬度大于铁),但杂质明显少,锻打开裂现象基本没有。
- Mixed RE elements could improve the conductivity of pure aluminum with relatively high content of impurities, but had little effect on that with relatively low impurity content. 混合稀土对杂质含量较高的纯铝的导电性有改善,对杂质含量低的纯铝的导电性基本不起作用。
- A panoramic analysis of impurity contents in crude oxide powder ofuranium(U3O8)was described by spark source mass spectrometry, the impurity contents of 66 elements were obtained. 利用火花源质谱法对天然铀氧化物粉末(U3O8)样品进行杂质元素的全分析,获得了66种杂质元素的分析结果。
- Pure RE (cerium, lanthanum) have certain improvement effect on the conductivity of pure aluminum with relatively high impurity contents in some degree of addition, but had a slight effect on that with relatively low impurity content. 单独加稀土铈或镧对杂质含量高的纯铝的导电性在一定的添加范围内有一定的改善,而对杂质含量较低的纯铝的导电性略有改善。
- The effects of impurities content on the CO2 content in limekiln gas described. 论述了影响石灰窑气除co2外其它物质含量的工艺因素。
- Feedstock demands meeting hydrocarbon steam reforming process including impurity contents of olefins, aromatics, sulfur, arsenic and chloride, as well as dry point of light fraction were introduced. 介绍烃类水蒸气转化制氢工艺对原料的要求,加烯烃、芳烃、硫、砷和氯等杂质的含量,以及轻油的干点等。
- Detecting impurity content in refinery brine by EDTA method 用EDTA法测精盐水中杂质含量
- Keywords maraging steel;stress corrosion;impurity content; 马氏体时效钢;应力腐蚀;杂质含量;
- In order to control impurities content in pure tungsten powder, it is important to determine trace As and Sn in pure tungsten powder. 为控制纯钨粉中杂质元素的指标,准确测定其中痕量元素砷和锡的含量十分必要。
- Teaching content should be concise. 教学内容要少而精。
- In order to control impurities content in pure tungsten powder,it is important to determine trace As and Sn in pure tungsten powder. 结果表明,石墨炉原子吸收光谱法测定纯钨粉中痕量砷和锡,方法可靠,简单快速。