化学纯

huà xué chún
  • chemically pure;chemical pure
化学纯化学纯
  1. 用此法测得基准钠蒙脱土和用化学纯高岭土精制的钠高岭土的CEC值分别为84.8和5.2mmol/100g土,而亚甲基蓝法测定值则分别为82.5和2.7mmol/100g土。

    The CEC values determined by the suggested method for standard Na montmorillonite ( Na M ) and refined Na kaolinite ( N K , from chemically pure kaolinite ) account 84.8 and 5.2 mmol / 100 g and by MB method-82.5 and 2.7 mmol / 100 g , respectively .

  2. 用海水制取的亚硫酸钾用于稻草蒸煮,其结果与化学纯亚硫酸钾的蒸煮结果相似。

    The results show seawater extracting potassium sulfite cooking rice straw and chemically pure potassium sulfite cooking rice straw have similar results .

  3. 采用自蔓延高温还原合成法,以化学纯B2O3,TiO2和金属镁粉为原料,制备了TiB2陶瓷粉料。

    TiB_2 power is fabricated by self-propagating high-temperature synthesis with B_2O_3 , TiO_2 and Mg power as raw materials .

  4. 酸法果胶的最佳条件,是在加3倍水,pH值2.0,90℃下,用化学纯酒石120min。

    The optimum conditions for acid - extracting - pectin method appeared to be to regulate pH to 2 . 0 using tartaric acid and extract at 90 C for 120 min.

  5. 化学纯或商品纯的甲酚(混合异构体除外)及其盐类

    Cresol ( incl mixed isomers ), chemically or commercially pure and its salts

  6. 借助紫外-可见吸收光谱和共振散射光谱技术,研究了几种阴离子的加入对“化学纯”银胶的光谱学性质的影响。

    The influence of different anions on " chemical pure " Ag sols have been investigated with UV-vis absorption and resonance scattering spectra .

  7. 化学纯VOSO4对硫酸亚铁还原/重铬酸钾滴定测铀法的适用性研究

    The applicability for determination of uranium content by use of the chemical pure voso_4 in the ferrous sulfate reduction / potassium dichromate titrimetric method

  8. 使用工业上新型的除钙剂,由工业级原锶液,可直接制得化学纯碳酸锶。

    The chemically pure stronium carbonate could be prepared directly from the industrial grade stronium solution by using a new type of calcium removing reagent .

  9. 研究了一些脂肪酸作为相变材料的热稳定性。选用的脂肪酸为化学纯的癸酸、月桂酸、肉豆蔻酸和棕榈酸,其融化温度在30~60℃之间。

    Thermal stability of some phase change materials ( PCMs ) of fatty acids including capric , lauric , myristic and palmitic acid with melting temperature between 30 ~ 65 ℃ were studied .

  10. 我们采用芦荟叶,通过一系列复杂的提取步序得到一种化学纯粉末,然后将流感病毒疫苗与之混合。

    " We take Aloe vera leaves and put them through a series of complex extraction steps to produce a chemically pure powder , and then we combine the flu vaccine with it ," he explains .

  11. 针对锑白生产过程中产品含铅高这一问题,用化学纯试剂研究了PbCl2在不同盐酸浓度、Sb3+浓度和温度条件下的溶解度。

    In view of the problem of high Pb content in antimony white product , the PbCl 2 solubility under the different conditions of HCl concentration , Sb 3 + concentration and temperature were studied using some chemical pure reagents .

  12. 只要将样品在化学纯的氢氟酸中漂洗7分钟,即可使界面态减少到不可察觉的程度,然后再进行C&V测量,可保证测定结果的正确性。

    After dipping the sample in chemical pure fluor-hydric acid for 7 minutes , the density of the interface states can be considerably reduced , then the C-V measurement can be carried out to ensure the precision of the measured results .

  13. 以工业氯磺酸代替化学纯试剂并放大5倍的实验结果为:产率,98.3%;产品熔点,255~256℃。

    The results of experiments which were scaled up by 5 times and with the replacement of chemically pure chlorosulfonic acid with industrial chlorosulfonic acid showed that the yield was 98.3 % and the melting point of products ranged from 255 to 256 ℃?

  14. 研究了以肼为还原剂、氨为配合剂的六方BN微颗粒表面化学镀纯镍反应新体系。

    A new chemical plating system for hexagonal boron nitride particles with hydrazine as the reductive agent was studied .

  15. 完全风化带内赋存着化学成分纯、Fe和Ti含量少的高岭石,其矿石结晶度较好,以蠕虫状、折扇状高岭石为主;

    Pure kaolinites with almost no Fe and Ti components occur in the completely weathering zone . The ores consist mainly of worm shaped and folded fan shaped kaolinites with higher degree of crystallinity .

  16. 用于微电子封装的化学镀纯镍工艺

    Electroless Pure Ni Plating for Microelectro ni c Packaging

  17. 化学合成纯铝酸钙水泥用于耐火浇注料中,浇注料表现出较高的烘干强度,且浇注料的烧后强度等性能指标也与用传统烧结水泥的大体相当。

    The typical castables prepared with chemical synthesized calcium aluminate cement performed a higher strength after dry , other properties like strength after firing were rather comparative with that containing conventional sintered calcium aluminate cement .

  18. 结果:肉眼观察经化学抛光的纯钛铸件表面呈镜面状。

    Results : The castings in Group C were polished chemically to mirror surface .

  19. 这些化妆品不含化学成份,纯天然的,而且没有用动物作测试。

    NO03, 4.These cosmetics are chemical free , all natural , and have not been tested on animals .

  20. (化学定律)纯物质中元素以一定比例的重量结合成该物质。

    ( chemistry ) law stating that every pure substance always contains the same elements combined in the same proportions by weight .

  21. 好,这就是A的化学势,在纯态,温度为T,压强为p总时。

    Well , that 's just the chemical potential of A , in the pure state , at temperature T and pressure pT .

  22. 化学镀Ni-P在纯锡凸点的应用及界面研究

    Study on Electroless Ni-P Application in Tin Bump and Their Interfacial Reaction

  23. 从锌焙砂湿化学法制备高纯、球状纳米ZnO粉体材料的研究

    Studies on the Preparation of High Purity , Spherical and Nanometer Zinc Oxide Powder Materials From Zinc Sand Calcined by Hydro-Chemical method

  24. 室温下采用电化学阳极氧化法在NaF、Na2SO4和H2SO4的混合溶液中用化学处理后的纯Ti片表面组装了一层结构高度有序的高密度TiO2纳米管阵列。

    High density , well ordered and uniform titanium oxide nanotube arrays were fabricated by anodizing process on a pure titanium sheet . Electrochemical anodization was carried out in NaF + Na_2SO_4 + H_2SO_4 electrolyte at room temperature .

  25. 因为DESI利用的是化学数据而非纯视觉数据,它能发现其他人接触后但没有留下指纹的东西。

    Because it is based on chemical rather than purely visual data , it can discover what else people touched before leaving their prints .

  26. 研究了矩形波导微波化学反应器在纯甲烷、低气压47Pa~5000Pa条件下,生成微波等离子体。

    Methane in a rectangular wave guide as microwave chemistry reactor was excited to produce microwave plasma under low pressure ( 47 ~ 5000Pa ) .

  27. 电子工业纯度级化学试剂GB/T3135-1982工业纯氧化铍粉末技术条件

    Electronic grade chemica Technical requirements of commercial purity beryllium oxide powder

  28. 金属物理&化学法制备高纯金属氧化物粉体的研究现状

    Progress of Metal Physical-chemical Method in Preparing High Purity Metal-oxide Powders

  29. 化学法制备高纯碲过程中杂质元素脱除的热力学分析

    Thermodynamic analysis of impurities removal in purification of tellurium by chemical method

  30. 所以他的化学势,等于纯物质的化学势。

    So it 's going to be the chemical potential of the pure material .