查询词典 chromophoric

Result Under the pretreatment conditions, the content of acetone extractives transformed. The hydroxyl and carboxyl, belonging to auxochromic groups, were oxidized into the carbonyl and ester groups. Also, there were plenty of auxochromic groups and chromophoric groups in the acetone extractives of silver chain.

结果］刺槐在预处理条件下，丙酮抽出物成分发生了变化，羟基、羧基等助色基团在预处理条件下氧化成羰基、酯基等发色基团，且丙酮抽出物的主要成分中含有大量发色基团和助色基团。

The paper carries on qualitative analysis to the acetone extractives before and after discoloring, shows the main components of the extractives and then takes comparison. The results shows :①The hydroxyl is oxidized and then shifted to the carbonyl,carboxyl, ester and ketone groups during inducing discoloration under the pretreatment conditions,which makes the wood color deep;② There are plenty of auxochromic groups in the acetone extractives of silver chain, the interaction between the auxochromic groups and the chromophoric groups makes the wood color deep.

摘 要：本文通过对刺槐变色前后丙酮抽出物的定性分析，得出变色前后丙酮抽出物的主要成分，进行对比分析，初步得出抽出物对诱发变色的作用为：①变色前后羟基在预处理条件下氧化成羰基，羧基，酯基和酮基等官能团，使木材颜色加深；②刺槐丙酮抽出物的主要成分中含有大量助色基，这些基团会与木素中的发色基团相互作用，使木材颜色加深。

The hydroxyl and carboxyl, belonging to auxochromic groups, were oxidized into the carbonyl and ester groups, belonging to chromophoric groups, during inducing discoloration under the pretreatment conditions, which makes the wood color deeper. There were plenty of auxochromic groups and chromophoric groups in the acetone extractives of silver chain. The interaction between the auxochromic groups and the chromophoric groups made the wood color deeper.

结论］羟基、羧基等助色基团在预处理条件下氧化成羰基、酯基等发色基团，使木材的颜色加深；刺槐木材丙酮抽出物的主要成分中含有大量发色基团和助色基团，这些基团间的相互作用使木材颜色加深。

The increase of fluorescence index and protein-like fluorescence signal suggested that bacteria could play an important role in the production of chromophoric dissolved organic matter.

荧光指数的增大与类蛋白荧光的产生，显示微生物在有色溶解有机质的生产上起着重要的作用。

The chromophoric substrate activity test shows that it has relatively high plasmin activity.

生色底物测活实验表明它具有较高的纤溶蛋白酶活性。

When heated , PVC may lose hydrogen chloride and form a chromophoric conjugated polyene structure.

当受热时，PVC可能失去氯化氢并形成一种有色的共轭聚烯结构。

A mysterious compound known as chromophoric dissolved organic matter may be a key piece in the puzzle of ocean life.

一种被称为有色可溶性有机物的神秘合成物也许会成为解决海洋生物问题的杀手锏。

The CL method is useful for the detection of compounds that have no chromophoric groups. Inhibition of CL emission allows the determined of most amino acids at 0.1-1 mM.

使用化学发光的方法对於没有发色团官能基的化合物特别有用，对於大部分胺基酸可测定的浓度值可达0.1~1 mM。

It is still considered to be achallenge for researchers to prepare novel polymer lattices with macroscopicallynon-centrosymmetric structure and in which chromophoric dipolar moleculesarranged with orientation.

无论从材料的结构、性能，还是材料自身的成本和可加工性，有机聚合物二阶非线性光学材料都显示出了比无机晶体材料更加优越的应用前景。

According to the determination of fatty acids, we established an HPLC method for the analysis of VPA in serum by RP-HPLC after transfered VPA into an ester which has chromophoric characteristics.

本文参照脂肪酸衍生化测定条件，建立了将丙戊酸转化为具有紫外吸收特征的酯，再经紫外检测的RP-HPLC测定方法。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了