查询词典 acrylic acid

Comparing it with the standard electrode potential of nitric acid,the reason of dissolution of HgS in aqua regia was quantitatively revealed,and this is that the high concentration of chloride ions reduces the reduction potential of sulfur in HgS,thus raising the reducing power of HgS rather than that the oxidizing power.

根据热力学平衡原理和设计的可逆电池反应，由 E~0Hg~(2++S/HgS数据，计算了 E~0HgCl_4~(2++S/HgS+4Cl~-数值，将其与 HNO_3的标准电极电位比较，定量地揭示了 HgS 溶于王水的原因在于该溶液中高浓度 Cl~-离子降低了 HgS 中硫的还原电位，从而提高了 HgS 的还原性所致，并非王水的氧化性比 HNO_3的更强。

Aquatint:It is an etching process on copper or steel by means of nitric acid.

水彩色调：用硝酸在钢片或铜片上作腐蚀的蚀刻法。

Both derivatives can be dissolved in 2 M hydrochloric acid and reextracted from the aqueous layer after basification.

两种衍生物在2 M盐酸可以被溶化和从含水层数被反萃取在碱化以后。

The results indicated that the ice sample was obviously divided into four layers as micro-pollution layer,cleaned layer,mixed layer and precipitate layer after aqueous bromamine acid solution was completely frozen.

试验表明，溴氨酸水溶液完全冻结后，冰样可分为4层：微污染层、洁净层、混合层和析出层。

With a soluble carbohydrate this appears as a ring if the the sulphuric acid is gently poured into form a layer below the aqueous solution.

Molish试验：生药水浸液，加a -萘酚试剂数滴，摇匀后沿管壁滴加浓硫酸，若有糖类成分与甙类存在，则在二液面交界处出现紫红色环。

After homogenate and centrifugation, the fat existing in liver was removed by diethyl ether. Then, the pH of the remaining aqueous layer was adjusted to 11.6 and clenbutamol was extracted using diethyl ether. The mobile phase component A was 50mmol/L phosphoric acid – 30mmol/L triethylamine and the pH was adjusted to 4.0 with 2mol/L sodium hydroxide.

此外，又将含有盐酸克伦特罗的猪肝用匀浆机匀浆，用1mol/L盐酸溶出其中的盐酸克伦特罗，再用乙醚去除盐酸溶出液中的脂肪后，用2mol/L氢氧化钠调节溶出液pH为11.6，用乙醚萃取其中的克伦特罗。

After removed ethanol, the solids was dissolved by 0.25% hydrochloric acid, After decolorizated under acidic conditions, the solution was transferred into alkaline, then alkaloids were eluted from the aqueous layer by using D101 macroporous resin.

回流除去乙醇后用0.25%盐酸复溶，在酸性条件下脱色后再将溶液调成碱性，经D101大孔树脂洗脱分离得到总生物碱。

It is also present in an aqueous solution of nitrourea or a sulphuric acid solution of nitrourea.

它也存在于硝基脲的水溶液或硝基脲的硫酸溶液中。

L-Ascorbic acid is widely used in chemical and biological systems as a reducing agent, mostly in aqueous solution.

L-抗坏血酸是一种广泛应用于化学和生物系统的还原剂，主要以水溶液的形式存在。

An aqueous solution of hydrogen bromide that is a strong liquid acid.

溴化氢的水溶液，一种强液体酸。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。