查询词典 sulphuric acid

We make superphosphate by reacting rock phosphate with sulphuric acid.

我们使磷酸盐岩同硫酸发生化学反应制造过磷酸钙。

We make superphosphate by react ing rock phosphate with sulphuric acid.

我们使磷酸盐岩同硫酸发生化学反应制造过磷酸钙。

A new fading spectrophotometric method for the determination of chromium is proposed, based on the decoloration of thoron Ⅱ oxidized by chromium in the medium of 0.32 mol/L sulphuric acid.

基于在0.32 mol/L硫酸介质中，铬氧化钍试剂Ⅱ褪色，提出了钍试剂Ⅱ褪色分光光度法测定铬的新方法。

Methods After extracting the samples, the reaction between thymol and nitrate produced nitrothymol in the presence of sulphuric acid; then nitrothymol was made to react with sodium hydroxide; determination was made on the concentration of nitrate by spectrophotometry at 412 nm.

样品经提取，其中的硝酸盐在硫酸酸性条件下，与麝香草酚生成硝基化合物，再与氢氧化钠作用，生成黄色化合物，在波长412nm处用分光光度法测定食品中硝酸盐含量。

What really does matter is that we've taken delivery of certain raw materials--rubber, umbrella-rrames, electrical goods, turps and sulphuric acid-which come to over seventy thousand dollars altogether

要紧的还是新进的那些货，橡胶，伞骨，电料，松香，硫酸，这一类总共得七万多块钱。

Construction and installation of anodically protected equipment for COSMO Chemical Company's 600 t/d sulphuric acid project in Korea are described, which is the first complete equipment of this kind exported from China to a more developed country.

介绍韩国COSMO化学公司600t/d硫酸项目阳极保护设备的制造和安装，这是我国第一次向较发达国家成套出口的此类设备。

Construction Scale and Its Content: 20t/y sulphuric acid cartilage element, 10t/y bacteriolytic enzyme

建设规模及内容：年产20吨硫酸软骨素、10吨溶菌酶。

S02 is absorbed by a slurry containing ZnO at a pH of about 5 and resulting zinc bisulphite is decomposed by sulphuric acid or heating by steam to form high-concentration S02 gas and zinc oxide, which are reused in system, or zinc sulphate as a byproduct.

采用pH值约5的氧化锌浆液吸收气体中的SO2，然后用硫酸分解或蒸汽加热分解产生的亚硫酸锌，获得高浓度SO2和氧化锌或硫酸锌，SO2和氧化锌重新使用，硫酸锌作为副产品。

Potassium permanganate and concertrated sulphuric acid reacts together to form heptoxide manganese, which is a brown oily liquid with high oxidazing ability.

高锰酸钾和浓硫酸反应产生氧化能力极强的棕色油状液体七氧化二锰。

This paper reported the synthesis of 2-hydroxyl-1-naphthalene formaldehyde under microwave irradiation with 2-naphthol, hexamethylenamine, solvent of glacial acetic acide, catalysis of sulphuric acid, and discussed the influence of the time and the power of microwave radiation, the proportion and quantity of reagents to the synthetic yield.

利用微波技术，采用2-萘酚与六次甲基四胺为原料，冰乙酸作溶剂，在浓硫酸的催化下合成2-羟基－1-萘甲醛，并考察了微波作用的时间、微波辐射功率、反应试剂的组成与用量等因素对产物产率的影响。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。