酸的

The process of becoming acid or being converted into an acid .

变成酸或者被转变为一种酸的过程。

The copolymers of 2-acrylamide-2-methyl propanesulfonic acid and itaconic acid were synthesized by free radical aqueous solution copolymerization, and its structure was characterized by IR.

用自由基水溶液聚合法，合成了2-丙烯酰胺基－2-甲基丙磺酸和衣康酸的二元共聚物缓凝剂，并用红外光谱表征了其结构。

Carboxylic acid was peroxidized in organic solvents catalyzed by lipase and glycidol was synthesized from allyl alcohol catalyzed by acid peroxide.

利用脂肪酶在有机介质中催化制备过氧酸，丙烯醇在过氧酸的作用下发生环氧化反应生成环氧丙醇。

The invention provides a method for preparing D-asparagus fern ammoniac acid and alpha-alanine.

本发明提供了一种D-天冬氨酸及L-丙氨酸的制备方法，属酶工程领域。

An amino acid that is an intermediate in the conversion of ornithine to arginine.

一种氨基酸，在将鸟氨酸转为精氨酸的过程中作为中介物。

Objective To establish a HPLC method for determination of the content of arginine hydrochloride in arginine hydrochloride and glucose injection.

目的 研究建立高效液相色谱测定法测定盐酸精氨酸葡萄糖注射液中盐酸精氨酸的含量。

A salt or ester of butyric acid .

棕榈酸的甘油三酸酯。

After analysis and research on the physical property and dehydrating specialty of the brown alga acid, it is determined that the single-and double screw dehydrators are in series connection used for the continual dehydration of the brown alga acid and the relevant dehydrating equipment is developed.

本文介绍了在分析褐藻酸的物性及脱水性能后，研究褐藻酸一次连续脱水达到含水率65%~70%的技术，进而确定采用单螺杆螺旋脱水机和双螺杆螺旋脱水机串联，进行褐藻酸的连续脱水，并研制了相应的脱水设备。

We further investigated the mechanism of VFAs production. Results revealed that this novel process could reduce the inhibitory effect of VFAs on the acid-forming microorganisms, and the total VFAs yield and the removal ratio of organic solids respectively depended on the first stage and the third stage of this novel process.

进一步分析多级逆流工艺产酸的机制，发现产酸效率的提高在于降低了发酵产物对厌氧产酸细菌的抑制效应，并且工艺的VFAs产率以及有机质去除率分别取决于第一级和第三级厌氧发酵过程。

A new method for the separation and purification of chiral mandelic acid by heated benzene extraction and refrigeration crystal was established. The ionization constant of mandelic acid was mensurated by pH potentiometer titration.

采用pH值电位滴定法测定了扁桃酸的离解常数，采用高效液相色谱法考察了扁桃酸在不同溶剂中的溶解度曲线和在苯-水体系中于不同pH值条件时的分配率，建立了热苯萃取和冷却结晶的扁桃酸纯化工艺。

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％。