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- hydrogen carbon ratio 氢碳比率
- The investigations have been made on the effect of corrosive medium,impacted velocity of the abrasives and chromium carbon ratio (Cr/C) on the wear-corrosion behaviors of medium chromium white iron. 系统地研究了腐蚀介质、冲击速度及铬碳比对中铬铸铁腐蚀磨损性能的影响。
- Sodium hydrogen carbonate should be added in portions and carefully, preventing overflow of the products from the beaker. 中和用碳酸氢钠要适量,每次加入量也不能太多否则会起泡沫溢出烧杯,造成不必要的损失。
- Red phosphor Al2O3:Eu was prepared by co-precipitation method using mixture of ammonium hydrogen carbonate and ammonium water as complex precipitator. 用碳酸氢铵和氨水混合溶液作为复合沉淀剂制备了Al2O3:Eu红色荧光粉体。
- Nanometer CeO_2 powders were prepared by means of microwave radiation using cerous nitrate and ammonium hydrogen carbonate. 以硝酸铈为原料;碳酸氢铵为沉淀剂;用微波加热的方法制备了纳米CeO_2超细粉体.
- High steam carbon ratios were required to prevent carbon formation in the reformer tubers. 为了防止重整管中碳的形成，蒸汽与碳的比率需要非常高。
- The analytical method of sodium carbonate,sodium hydrogen carbonate and total alkality in natural alkali was studied by combining nonwater titration with acid-base titration. 研究了非水滴定和酸碱滴定相结合测定天然碱中碳酸钠、碳酸氢钠和总碱度的分析方法;
- Abstract: Amorphous hydrogenated carbon films have been deposited with benzene in an electron cyclotron resonance (ECR) plasma system. 文摘:用苯作源气体在一个微波电子回旋共振离子体系统中沉积了含氢非晶碳薄膜，研究了沉积参数对膜的生长速率的影响。
- Preparation and XPS study of gradient bromating amorphous hydrogenated carbon film[J]. 引用该论文 马兆侠;吴卫东;冯建鸿;程新路;唐永建;杨向东.
- Water contains hydrogen and oxygen. 水含有氢和氧。
- Amorphous hydrogenated carbon films have been deposited with benzene in an electron cyclotron resonance (ECR) plasma system. 用苯作源气体在一个微波电子回旋共振离子体系统中沉积了含氢非晶碳薄膜，研究了沉积参数对膜的生长速率的影响。
- Water, containing dissolved calcium hydrogen carbonate, passes through the limestone and drops evaporate on the stalactite, increasing its length with a deposit of calcium carbonate. 含有溶解碳酸氢钙的水通过石灰石滴在钟乳石上蒸发,随着碳酸钙沉积物的增加不断增加着它的长度。
- Effect of Steam and Carbon Ratio to Urea Conversion System 水碳比对尿素合成系统的影响
- Gypsum,ammonium hydrogen carbonate and potassium chloride were used as raw materials in this research,to produce potassium sulfate,potassium ammonium chloride and calcium carbonate. 以石膏、碳酸氢铵和氯化钾为原料,生产硫酸钾、氯化铵钾和碳酸钙,原料综合利用充分,经济效益好。
- As viewed from application of the technoogy of producing high-pure manganes carbonate using poor manganese, ferrisulphas and ammonium hydrogen carbonate as raw material is introduced. 本文从应用的角度出发,介绍了以贫锰矿、硫酸亚铁、碳酸氢控等为原料,生产高纯碳酸锰的方法。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- I make a carbon copy of my documents. 我用复写纸复写文件。
- Soft drinks contain carbon dioxide. 软饮料中含有二氧化碳。
- I have some carbon paper somewhere or other. 我记得我在什么地方放有复写纸。
- Carbon and hydrogen are chemical elements. 碳和氢是化学元素。
