Aim to synthesize compounds with coumarins basic skeleton.
目的合成香豆素基本骨架化合物。
The paper discusses the regularity of nomenclature of organic compounds and gives out some basic rules for naming organic compounds.
探讨了有机化合物系统命名规则，并得出了有机化合物命名的一些简单规律。
A new stabilization additive was studied, it has good effect to improve the color change and sediments formation of FCC diesel fuel containing non-basic nitrogen compounds.
新研制的柴油安定性添加剂对抑制由非碱性化合物引起的催化裂化柴油的颜色变深和沉渣生成有较好的效果。
The distribution of basic nitrogen compounds in FCC gasoline have no change during sweetening process.
脱臭前后FCC汽油中碱性氮化物种类和分布基本没有变化。
The fracture systems of oil field t in Jianghan Basin are evaluated by the method to obtain some basic cognizances of fracture distribution and gaining hydrocarbon compounds in the fracture systems.
并应用该方法对江汉盆地T油田的裂缝组系进行了评价，获得了裂缝可能的分布规律及裂缝组系对捕获烃类的有效性等基本认识。
Objective:To reflect and comment on basic status, methodological characteristic and existent problems presently about the study of TCM's compounds.
目的：客观反映和评价当前中药复方研究的基本状况、方法特点和存在的问题。
The influences of different composition of refined solvent, ratio of reagent to oil, temperature and time of extraction, time of setting on removal of basic nitrogen compounds were studied.
考察了精制溶剂组成、剂油比、精制温度、反应时间及静置时间对脱碱氮的影响。
The acidic-basic properties of simple substances and compounds are discussed from this viewpoint.
本文还用此观点讨论了一些单质和化合物的酸碱性质。
In this paper, the one-pot reaction of aqueous titanium trichloride with o-nitroaniline and 1, 2-diketone compounds in basic media was studied.
研究三氯化钛存在下邻硝基苯胺与1,2 -二酮在碱性介质中一锅反应，快速方便、高收率地合成了一系列取代喹喔啉化合物。
The basic nitrogen compounds include pyridines and quinolines.
碱性氮化物包括吡啶和喹啉。
The influence of two natural organic compounds on the activity and thermal stability of 2709 basic protease were investigated.
探讨了2种不同天然有机物对2709碱性蛋白酶的活力和热稳定性的影响。
Zinc basic coating, prepared with flake zinc powder, aluminum powder, chromic anhydride and some other organic compounds, possessed good combination force and corrosion resistance.
利用片状锌粉、铝粉、铬酐及其它有机物配制的锌基涂料具有良好的结合力和耐蚀性。
The results show that the removal of nitrogen compounds by TiCl 4 complexing is about 80%, and 90% for that of basic nitrogen compounds.
结果表明：四氯化钛对总氮的脱除率为80％左右，碱氮的脱除率可达90％以上； 二氯化铜对碱性含氮化合物的络合具有较高的选择性；
The etherification process of FCC light gasoline meets the requirement of producing clean gasoline, while the basic nitrogen compounds can deactivate the etherification catalyst-sulfonic acid resin.
催化裂化轻汽油醚化工艺适应了生产清洁汽油的要求，轻汽油中含有的少量碱性氮化物中和阳离子交换树脂催化剂的酸性，造成催化剂失活。
Water extraction is an economical and effective method that is applied to remove basic nitrogen compounds in FCC light gasoline.
水萃取法是脱除催化裂化轻汽油中碱性氮化物的经济有效的方法。
A process for the removal of basic nitrogen compounds from light gasoline by extraction is studied. The effects of extraction conditions on the removal of basic nitrogen compounds are investigated.
通过研究萃取法脱除催化裂化轻汽油中能使醚化催化剂失活的碱性氮化物的工艺，考察了各种工艺条件对碱性氮脱除率的影响。
A process for the removal of basic nitrogen compounds from light gasoline by extraction is studied. The effects of extraction conditions on the removal of basic nitrogen compounds are investigated.
通过研究萃取法脱除催化裂化轻汽油中能使醚化催化剂失活的碱性氮化物的工艺，考察了各种工艺条件对碱性氮脱除率的影响。
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