查询词典 sulphate

In order to investigate the effects of different sulphur fertilizers on rice and the recycling and balance of sulphur in rice-rice agro-ecosystem, seven treatments with different sulphur fertilizers were applied in a rice-rice cropping field with randomized block design, which included no sulphur, ammonium sulphate, single superphosphate, elemental S, gypsum, 50％ S from gypsum and 50％ from elemental sulphur (50％ GYP + 50％ ES), 70％ S from gypsum and 30％ from elemental sulphur (70％ GYP + 30％ ES).

为了了解不同硫肥对水稻的效应及在水稻栽培农业生态系统中硫的循环与平衡情况，采用随机区组设计，将不同来源的硫肥设为7个处理包括：对照，硫酸铵，过磷酸钙，自然硫素，石膏，50％石膏+50％自然硫素，70％石膏+30％自然硫素，对水稻进行处理。

The hot spot leads to the existence of calcium sulfate hemihydrate, which belongs to microwave special effect, rather that non-thermal effect. Second, based on the reaction to get calcium sulphate, we started and ended at the same temperature and then studied through experiment the difference of weight of calcium sulfate obtained through microwave heating and traditional water bath.

第二，基于硫酸钙晶体生成反应，实验研究了微波加热和水浴加热下从相同的初始温度加热到相同的末温生成硫酸钙晶体质量的差异；通过光纤温度计记录了加热过程中两种溶液中心点的温度变化，按照温度变化曲线，通过理论计算了不同的升温速率下微波加热和水浴加热下生成硫酸钙晶体的质量。

Seeing its desiccation by negative pressure, recycle of crystal modifiers and preheating of raw gypsum, this technology has been rendered most efficient in producing calcium sulphate hemihydrate, with higher quality and lower energy consumption.

工艺中利用"闪蒸原理"进行负压干燥，媒晶剂溶液循环使用，媒晶剂溶液的余热预热生料，使得生产能力及产品质量大为提高，能耗大幅度降低。

The hydrolysis is an important step in the production of titanium dioxide through sulphate process.

在硫酸法钛白粉的生产中，水解技术是其中关键的一环。

As compared with traditional zinc concentrate hydrometallurgy, the technology omitted roasting and relieving hyperacidity with fume procedure, and produced sulfur. The technology, which can decrease environmental pollution and energy consumption in the zinc metallurgical process, is a new metallurgical technology. This papers innovation is: 1 The suspension electrolyte system based on zinc sulphate solution was put forward.

通过对矿物系统的研究，我们最终得到处理硫化锌矿物的悬浮电解工艺流程，该工艺与传统的锌精矿湿法工艺相比，省去了焙烧工序和烟气制酸工序，产出元素硫，明显减少锌冶金过程的环境污染和降低锌冶金过程的能量消耗，是一个全新的新冶金工艺。

The questing for long service electroless Nickel technology leads to the preferable formula and operation conditions as follows: Nickel Sulphate 25g/L, Sodium Hypophosphate 30g/L, Lactic Acid 20~ 25ml/L, Citric Acid 5g/L, Sodium Acetate 15g/L, Thiourea l~3mg/L, Stabilizer E Img/L.

研究得出的最佳长寿命镀镍工艺为；硫酸镍25g/L，次亚磷酸钠30g/L，乳酸20ml/L，柠檬酸5g/L，乙酸钠15g/L，硫脲1～3mg/L，稳定剂E1mg／L镀液pH值5.0～5.1，施镀温度90±2℃，装载量1dm~2/L；每60min测量镀液中消耗的有效成分和补加浓缩液。

A new method of producing comparatively pure potassium sulphate from seawater using inartificial zeolite as the medium of ion exchange was especially introduced.

特别介绍了用天然沸石作为离子交换剂，从海水中制备较纯净的硫酸钾新工艺。

Chromic trioxide and chromium hemitrioxide are determined with iodometry, the coefficient of variation of chromic trioxide is 0.056%, and the recovery of marked compound is 99.82-99.83%; the coefficient of variation of chromium hemitrioxide is 1.45%,and the recovery of marked compound is 98.55-99.26%; iron is determined by complexometric titration, the coefficient of variation of iron is 1.73%, and the recovery of marked compound is 99.12-99.23%;sulfate is determined by complexometric titration, the coefficient of variation of sulphate is 0.16%, and the recovery of marked compound is

Analysis Of The Chromium Electroplating Wastewater By Oxidation-reduction And Complexometric Titration-化学工程与工艺-本文采用氧化还原滴定法与络合滴定法对镀六价铬的废水中铬酸酐，三氧化二铬，铁和硫酸根的含量进行了测定：铬酸酐和三氧化二铬用碘量法测定，铬酸酐的变异系数为0.056%，加标回收率为99.82-99.83%，三氧化二铬的变异系数为1.45%，加标回收率为98.55-99.26%；铁用络合滴定法测定，其变异系数为1.73%，加标回收率为99.12-99.23%；硫酸根用络合返滴定法测定，其变异系数为0.16%，加标回收率为

The research based on mineral analyses and experiments show that in the sulphate system hydronic jarosite will precipitate when the concentratjon of Fe3+ and SO increases, and goethite will be formed by hydrolises, or goethite and hydrogoethite will be formed when the concentration of .

运用多种方法鉴定表明，在硫酸盐体系中，从高浓度Fe3+和SO溶液中形成的草黄铁矾在表生条件下可水解成外铁矿。

The potassium ammonium jarosite with zinc and indium is obtained by Fe3+ ion removal from the iron,zinc and indium coexisted sulphate system by potassium ammonium jarosite process.

在铁、锌、铟共存的硫酸盐体系中采用黄钾铵铁矾法除铁，得到了含锌、铟的黄钾铵铁矾，通过TG/DTA和XRD对黄钾铵铁矾及其热分解产物进行表征。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。