介绍了一种新的测定亚硝酸根的荧光探针分子 ——— 3- ( 4-氨基苯基 ) 中氮茚-1-羧酸甲酯 ( API ).A novel fluorescence probe, 3 - ( 4 - aminophenyl ) indolizine - 1 - carboxymethyle ( API ) has been developed for the determination of trace nitrite.介绍了一种新的测定亚硝酸...
Methyl 2, 6 - dichlorophenoxyacetate is prepared with 2, 6 - dichlorophenol , sodium methoxide and methyl chloroacetate as raw materials.以2, 6- 二氯苯酚 、 甲醇钠甲醇溶液和氯乙酸甲酯为原料,合成了2, 6-二氯苯氧乙酸甲酯.Dimethyl carbonate is synthesized d...
It is useless spoiling the ship a ha'p'orth of tar.吝惜半便士柏油而毁坏一只船(因小失大).The boy is very active, ha never flays up.这个男孩很活跃, 但从来不惹麻烦.Ha! said Wren. Think I'd trust you?“哈！”雷恩说，“你以为我会相信你？”"Ha!" It was a cross ...
I started shaking uncontrollably and began to cry.我不由自主地开始发抖，接着就哭了起来。Her heart raced uncontrollably.她控制不住地心跳加速。She started to weep uncontrollably.她不由自主地哭了起来。...
他今天早上在家中被身份不明的闯入者射杀。He was shot this morning by unidentified intruders at his house.警察警告闯入者离开。The police warned the intruder off.那些狗冲着闯入者狂吠不已。The dogs snarled at the intruders....