酸基

The fluorescence characteristic of aresenoxylphenylazo rhodanine and the influence of-F,-Cl,-NO〓 and -OCH〓 on the fluorescence analysis performance were studied.

首次研究了胂酸基偶氮若丹宁的荧光性质，系统研究了-F、-Cl、-NO〓、-OCH〓基团对其荧光分析性能的影响。

According to this, a series of new methods to determine trace cobalt, copper, antimony, cadmium, aluminum and iron was established by taking advantage of the characteristic of metal ions with intense catalysis effect on hydrogen peroxide oxygenating rhodanine.

基于此，利用痕量金属离子对过氧化氢氧化若丹宁具有强烈催化作用的性质，建立了一系列利用新型含羧酸基偶氮若丹宁衍生物催化荧光法测定痕量钴、铜、锑、镉、铝和铁的新方法。

It is confirmed by the FTIR spectra that the sulfonic acid groups have been linked to PS.

通过傅立叶红外光谱表征证明，磺酸基已经被引入到聚苯乙烯的苯基侧链上。

The effect of the introduction of sulfonic group on the improvement of conductivity and solubility in organic solvents and water as compared with polyaniline are specifically analyzed.

结合典型实例，论述了磺化聚苯胺的合成及成膜方法，着重分析了磺酸基的引入对聚苯胺电导性及其在有机溶剂和水中的溶解性的改善作用。

A sulfonated poly aryl ether with sulfonic group on naphthalene ring of side chain and preparation thereof, which is capable to solve technical problems of complexity in synthesis, hardness in controlling sulphonation position and degree, high possibility of side reaction in sulphonation, complexity in sulphonation and hardness to realize indutrialzation.

一种磺酸基在侧链萘环上的磺化聚芳醚及其制备方法，解决现有技术中合成方法复杂，磺化位置和磺化度难以控制，磺化过程中容易发生多种副反应，磺化工艺复杂难以实现工业化等技术问题。

Any of a group of enzymes that catalyze transamination.

组成蛋白质的基本单位，含有一个氨基和一个羧酸基。

It is considered that the carboxylic groups coordinate to the metal ions in four modes: monodentate, the chelating bidentate, the bridging bidentate, and thebridging-chelating tridentate.

一般认为羧酸基有四种配位方式：单齿、螯合双齿、桥联双齿和螯合桥联三齿。

The flocculated decolorization of dyes has something to do with their structure.

染料分子的结构对其絮凝脱色的影响研究显示：从能量相互作用来看，染料分子中磺酸基个数越多，其与聚合物絮凝剂PAN-DCD的键合程度越高，染料的脱色率越大；从疏水相互作用来看，染料分子中疏水基团越多，其与PAN-DCD的相互作用越大，疏水基团的体积越大，染料的脱色效果越好。

It is used as a biological stain and as an indicator in acid-base titrations.

用作生物着色剂和酸基滴定指示剂

A'.'' biological stain and as an indicator in acid-base titrations.

用作生物着色剂和酸基滴定指示剂

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。