Chiral imine 1 derived from (r) glyceraldehyde acetonide could rapidly react with ketenes 2 which was converted from mixed anhydride or acid chloride under mild conditions.
由(R)-丙叉甘油醛得到的手性亚胺1能与烯酮2在温和条件下迅速反应。
The new species differs from R. bullata by the absence of fumarprotocetraric acid and the difference of geographical distribution.
本种与泡状脐鳞的区别是不含富马原岛衣酸及地理分布的差异。
To study the synthesis of chiral precursor R(-)-mandelic acid obtained by asymmetric bioreduction of phenylglyoxylic acid.
目的研究生物不对称催化苯乙酮酸合成手性药物前体R（-）-扁桃酸。
The method is based on the catalysis of phenanthroline to the discoloring reaction of bordeaux R oxidized by potassium periodate in the dilute acetic acid solution.
在稀醋酸介质中，痕量邻菲咯啉对高碘酸钾氧化玫瑰桃红R褪色反应有明显的催化作用，据此建立了测定邻菲咯啉的催化动力学光度法。
The properties of gold adsorption and desorption of R-519 resin in hydrochloric acid solution were studied by static method.
采用静态法研究了R-519树脂在盐酸介质中吸附、解吸金的性质。
The fuzzy character of colour of the acid base indicator alizarin yellow R is studied in the paper.
研究了酸碱指示剂茜素黄R颜色的模糊特性。
In monitor of the chief systems of experimental cattle, only bradycadia, mild imbalance of acid-base and prolonged P-R interval of ECG were found.
对实验牛心血管系统、呼吸系统，肝肾系统和血液指标监测，仅见心率减慢、轻度酸碱平衡紊乱以及ECG的P—R间期延长，其他指标均无明显变化。
The results showed as follows: there was a certain limitary role of specific amino acid default on the growth of R. amylophilus, B. fibrisolvens and P. ruminicola.
结果表明：特定氨基酸缺省对嗜淀粉瘤胃杆菌、溶纤维丁酸弧菌和栖瘤胃普雷沃氏菌的生长限制性作用有所差异。
Take up the residue in 2 quantities, each of 5 ml, of dilute hydrochloric acid R.
将供试品炽灼残渣分成两份，每份加入5ml稀盐酸。
The quantitative experiment provides the reaction velocity under different acid gas intensity, at the same time the changing r...
定量实验给出了不同酸气强度条件下反应速度，同时获得了反应速度同温度、压力的变化规律。
The quantitative experiment provides the reaction velocity under different acid gas intensity, at the same time the changing r...
定量实验给出了不同酸气强度条件下反应速度，同时获得了反应速度同温度、压力的变化规律。
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