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- Preservative law of harmful elements in coal of Late Permian Epoch and its environmental geological problems in Southern Guizhou Province 黔南晚二叠世煤中有害元素赋存规律及其环境地质问题
- This thesis introduces a simplified tail gas purge system, which functions to absorb the harmful elements in tail gas. 介绍了一套简易尾气净化系统,它可以吸收汽车尾气中的有害成分,并且能循环使用而且节能。
- Since harmful elements in size, pastes and dyestuffs are deposited on fabrics, so that the harmful elements contents of grey and dyed fabrics are increased. 随着加工工序的增多,浆料及染料中的有害元素不断地在织物上沉积,致使坯布、印染布上有害元素的含量增加。
- The analysis of harmful elements in iron making such as K_2O, Na_2O, ZnO, PbO with Quant A S software in 9800XP X-ray fluorescence spectrometer of Switzerland ARL Company is introduced. 介绍了石钢应用瑞士ARL公司9800XP型X射线荧光光谱仪中QuantAS软件对炼铁生产中有害元素K2O,Na2O,ZnO,PbO的分析。
- A method for determining trace elements in coal flying ash cenosphere samples by inductively coupled plasma mass spectrometry(ICP-MS) was developed. 建立了一种电感耦合等离子体质谱法测定粉煤灰漂珠中微量元素的方法,检出限为0。
- Oxygen is a harmful element in Ni-base superalloy, which is usually the origin also the propagating passageway of fatigue cracks and will cause creep effect and affect the lasting strength. 氧在高温合金中是作为有害杂质元素存在的,通常是疲劳裂纹的萌生地及扩展通道,从而影响高温合金的蠕变、持久强度等性能。
- During the combustion process of coal, the nitrogen element in coal may turn to various oxides of nitrogen, thereby, resulting in ambient pollution. 煤中氮元素在煤燃烧过程中会转化为各种氮的氧化物,从而造成环境污染。
- According to the strata about the trace elements in coal of China,the different background value of trace elements in different parts of China were d rew out. 由于分析样品分布不均和采用的测试方法各不相同,本文的数据还不能准确地代表中国煤中微量元素的平均丰度值。
- Moreover the geochemistry of trace elements in coal could be used to explain the coalification,and some elements as special marker could be used to compare the coal beds. 另外应用元素地球化学理论可以探讨成煤作用,一些微量元素可以用作煤层对比标志,微量元素对煤炭开采、加工、利用等方面都将产生影响。
- I'm out of my element in political discussions. 我不喜欢参加政治讨论。
- A method for the determination of 21 major,minor and trace elements in coal and coal ash samples by inductively coupled plasma-optical emission spectrometry(ICP-OES) was reported in this paper. 综合采用离峰背景校正法及干扰系数校正法消除各种干扰对测定的影响,电感耦合等离子体发射光谱法测定煤及煤灰样品中21个主次量及微量元素。
- France has fallen behind (Germany) in coal production. 法国在产煤方面落後(於德国)了。
- Distribution patterns of the rare-earth element in coal are similar for the coals from the same district, and different for the coals of different districts. 同一矿区晚二叠世煤的稀土元素配分模式具有一定的相似性，而不同地区晚二叠世煤的稀土元素配分模式则差异较大。
- Self-help is an important element in therapy for the handicapped. 伤残人士在治疗中，自助自立是个重要因素。
- He bought in coal for the winter. 他购买了大量的煤过冬。
- Titanium was the most harmful element to the machinability. 随流孕育对缸体材质的稳定达标起到了保证作用；
- Abundance of Trace Elements in Coal of China 中国煤中微量元素的丰度
- Canada used to be rich in coal deposits. 加拿大曾经盛产煤矿。
- We must include this chemical element in the group. 我们必须使组里包括这种化学元素。
- This part of country is rich in coal. 这个地区盛产煤。
