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- After purification,the total content of hydrogen sulfide with hydrogen phosphide are less 10ppM in the acetylene gas. 净化后的乙炔气中硫化氢、磷化氢含量总和小于10ppm,净化效果好,安全可靠,成本低,效益好,值得乙炔站推广。
- The influences of reaction temperature,content of catalyst,volume of hydrogen peroxide and reaction time on the yield of phenyl carboxylic acid were investigated. 以过氧化氢为氧化剂,十六烷基三甲基钨磷杂多酸铵为催化剂,催化氧化苯甲醛制苯甲酸。
- The content of hydrogen sulfied in cokeoven gas was determinated by Gas Chrognotogphy. This method had high accuracy and procision and it didn't affect by sulfur dioxide. 用气相色谱法测定焦炉煤气中的硫化氢含量。该方法具有简便、快速等优点,准确度、精密度都较高,不受干扰物质二氧化硫的影响,完全满足成分复杂的焦炉煤气中硫化氢的测定
- This paper reviewed the activity of hydrogen in silicon oxynitride films and its effects on their properties,and pointed out the rational ways to reduce the content of hydrogen. 详细阐述了氮化硅薄中氢杂质的存在活动及其对薄膜性能的影响,并提出了降低氢含量的合理方法。
- Water is composed of hydrogen and oxygen. 水由氢和氧组成。
- Research result expressed: between natural surface activity agent thea saponin and metallic aluminium powder, did not occur chemical reaction, not influence content of active aluminium volume of hydrogen and gas forming property of aluminium powder. 研究结果表明:天然表面活性剂茶皂素与金属铝粉之间,在实验条件下,没有发生化学反应,不影响金属铝粉中活性铝的含量、氢气的体积以及铝粉的发气特性。
- In addition, treatment of preharvest Harpin increased the activity of superoxide dismutase (SOD), enhanced the content of Hydrogen peroxide (H2O2) and reduced the activety of catalase (CAT). Harpin处理还增加了果实过氧化氢(H2O2)含量、提高了超氧化物歧化酶(SOD)活性、降低了过氧化氢酶(CAT)活性。
- The results show that the absolute humidity of the welding environment has great influence on the hydrogen diffusion, and that the greater the absolute humidity, the higher the content of hydrogen diffused in deposited metal. 结果表明,焊接环境的绝对湿度对超低氢焊条熔敷金属中扩散氢含量有较大影响,绝对湿度越大,焊缝金属中扩散氢含量越高。
- It can avoid the influence of crystal water and adsorbed water in catalyst in the process of determining the content of hydrogen of coke. So the method can improve the precision of determining the ratio of hydrogen to carbon of coke on catalyst. 这种测定方法避免了在测氢过程中催化剂结晶水和吸附水对测定结果的影响 ,大大提高了催化剂上焦碳H C的测定精度
- Reducing content of hydrogen effect of fluoride,carbonate,active chide and rare earth oxide in weld by self-shielded flux-cored wire with CaF2-TiO2 MgO slag system is investigated. 探讨氟化物、大理石、高价氧化物和稀土氧化物在氟钙钛渣系自保护药芯焊丝中的降氢机理。
- A molecule of water consists of two atoms of hydrogen and one atom of oxygen. 水分子含有两个氢原子和一个氧原子。
- Water is a compound of hydrogen and oxygen. 水是氢和氧的化合物。
- Atoms of hydrogen are fused to make helium. 氢原子可熔合成氦。
- Water,you know,is made up of hydrogen and oxygen. 你知道,水是由氢和氧构成的。
- Water is formed of hydrogen and oxygen. 水由氢氧构成。
- The thieves got away with the contents of the safe. 那些窃贼偷走了保险箱内的东西。
- high content of hydrogen sulfide 高含硫
- The entire content of a book will be located on a single silicon chip. 整本书的内容只用一片硅芯片就可以装下。
- Water is made up of hydrogen and oxygen. 水是由氢和氧两种元素组成的。
- Water consists of hydrogen and oxygen. 水由氢和氧组成。