The possibilities of redox reactions between chromate (Cr(Ⅵ)) and ferrous iron (Fe(Ⅱ)) in alkaline system were investigated in the laboratory and analyzed from point view of thermodynamics with a purpose to control chromium leaching from incineration fly ashes.
为了控制焚烧飞灰中铬的浸出,将FeSO4加入焚烧飞灰水系统中和Cr(Ⅵ)的碱性水溶液中,试验二价铁(Fe(Ⅱ))对Cr(Ⅵ)的还原效果,并检验了Cr(Ⅵ)的还原产物的稳定性。
In this paper,palladium(Ⅱ)-catalyzed allylic rearrangement reaction was described.
近年来二价钯催化反应已成为研究热点,其催化的烯丙位重排反应则研究较少。
In this paper,Palladium(Ⅱ)－catalyzed allylic rearrangement reaction is described.
近来,二价钯催化反应以其高选择性、环境友好以及原子经济性等诸多优点成为研究热点。
A divalent atom or radical.
二价原子二价的原子或基
Of or containing bivalent nickel, Ni2+.
含二价镍的有或含有二价镍Ni2＋
the bivalent radical UO2 which forms salts with acids.
二价基UO，与酸形成盐。
grene antitoxin
二价气性坏疽抗毒素
any of the bivalent metals (calcium or strontium or barium or magnesium).
任何二价金属（钙、锶、钡、镁）。
It is to reduce Eu3+ into Eu2+ with electrolyzation method.
采用电解的方法将三价铕还原成二价。
a bivalent and trivalent metallic element of the rare earth group.
稀土属二价和三价金属元素。
Dual Value of Audit:Authentification Value and Insurance Value;
审计的二重价值:鉴证价值和保险价值
It's buy one and get the second half price.
买一件，第二件半价。
The price is 20 yuan for a return ticket.
往返票价是二十元。
number of equivalent binary digits
等价二进制数位位数
binary equivament machine instruction
等价二进制机器指令
Prices evened out the following year.
第二年物价稳定下来。
How long will the sale last? Only two days.
折价销售多久？ 只有二天。
Look at the price of secondhand car or look at secondhand car price.
看看旧（二手）汽车的价格。
equivalent binary digit
等价的二进制数字;等效二进位数;等值二进数
Price appraisal of Second-hand housing Based on Hedonic Price and SVM;
基于特征价格与SVM的二手房价格评估
On the Duality of Cultural Value and That of Commodity Value;
试论文化价值二重性与商品价值二重性——系统价值学论稿之八