等环的

In ring-open form, because of its excellent fluorescence image in living cells, this compound can apply in bioimaging. Also, its properties of restorable and fatigue counteraction can be also well displayed.

在开环态时，化合物具有优良的荧光性能，可以成功应用于细胞成像，在活细胞中可获得清晰的荧光成像图，同时也可以发挥螺吡喃光致变色可循环、耐疲劳等优势。

A series of 3,3,6,6 tetramethyl 1,8 dioxo 9 aryl 1,2,3,4,5,6,7,8,9,10 decahydro acridines have been synthesized by the condensation of aromatic aldehydes, 5,5 dimethyl 1,3 cyclohexanedione and ammonium acetate in the presence of triethylbenzylammonium chloride as catalyst in water.

芳醛、5 ，5 二甲基 1，3 环己二酮与醋酸铵在三乙基苄基氯化铵催化下以水作为溶剂反应，生成一系列 3 ，3 ，6，6 四甲基 1，8 二氧代 9 芳基 1，2 ，3 ，4，5 ，6，7，8，9，10 十氢吖啶，与其它溶剂相比，水作为该反应的溶剂具有价格便宜，不易燃和无毒等优点，而且产率较高，产物的结构通过单晶X射线确

The accurate heat of formation 1088 kJ?mol^(-1) of DAT in gas phase was obtained via designed isodesmic reaction in which the tetrazine ring and the azide group have been kept.

在不破坏四嗪环和迭氮基的原则下通过构建等键反应求得了DAT的精确生成热为1088kJ？

The accurate heat of formation 1088 kJ·mol－1 of DAT in gas phase was obtained via designed isodesmic reaction in which the tetrazine ring and the azide group have been kept.

在不破坏四嗪环和叠氮基的原则下通过构建等键反应求得了DAT的精确生成热为1088 kJ·mol—1。

This research uses the triethyl phenmethyl ammonium chloride to make the catalyst, take double phenol A, the epichlorohydrine, the sodium hydroxide as raw material, to affected factors and so on effect allocated proportion, temperature, reaction time to conduct the full research.

本研究采用三乙基苄基氯化铵作催化剂，以双酚A、环氧氯丙烷、氢氧化钠为原料，对影响效果的配比、温度、反应时间等因素进行了充分的研究。

Flame—retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire...

通过磷酸、三羟甲基丙烷和环氧氯丙烷的缩合和聚合反应制得阻燃树脂，然后将它与己二酸、一缩二乙二醇在一定条件下反应制得含P1.5%和含Cl17～18%的聚酯多元醇，再将它与多异氰酸酯、水、催化剂等组分采用一步法发泡工艺制得阻燃聚氨酯软泡塑料。

Flame— retardant resin was prepared by the condensation and polymerization of phosphoric acid, trihydroxy methyl propane and epoxy chloropropane,the resin was then reacted with hexane diacid and diglycol under certain condition ,resulting in polyol containing 1.5% P and 17— 18% polyester polyol, which was foamed with polyisocyanate, water and catalyst by one— step method, producing fire—resistant PU soft foam.

通过磷酸、三羟甲基丙烷和环氧氯丙烷的缩合和聚合反应制得阻燃树脂，然后将它与己二酸、一缩二乙二醇在一定条件下反应制得含P1.5%和含Cl17～18%的聚酯多元醇，再将它与多异氰酸酯、水、催化剂等组分采用一步法发泡工艺制得阻燃聚氨酯软泡塑料。

With regard to the current society, much hubbub in the European Union ban on the use of four kinds of children's toys, plasticizers, Jiangnan University, and Dr. LG Chemical in two epoxy esters, briefed the meeting on high molecular weight plasticizers, citrate butyl ester, such as trimellitic several environment-friendly non-toxic plasticizer that can be replaced ethylhexyl phthalate, ethylhexyl adipate, whether it is synthetic process, the source of raw materials are not a problem, but there are differences in price, but into the large-scale production, the price will be decreased substantially.

关于目前社会上闹得沸沸扬扬的欧盟禁止在儿童玩具中使用四种增塑剂，江南大学和LG化学的两位博士在会上介绍了环氧酯类高相对分子质量增塑剂、柠檬酸三丁酯、偏苯三酸酯等几种无毒环保型增塑剂，认为完全可以取代邻苯二甲酸乙基己酯、己二酸乙基己酯，无论是合成工艺、原料来源都不成问题，只是在价格上还有些差异，但进人大规模生产后，价格会有较大幅度下降。

The cyclization conditions were optimized with respect to reaction system, time, temperature, catalyst nature and its content, and ZnCl2 is found to be more suitable than other catalysts investigated for the trimerization of aromatic nitriles under normal pressure, and the maximum conversations of terephthalonitrile and 4,4'-dicyanobiphenyl were 82% and 78%, respectively.

优化了反应体系、温度、时间、催化剂种类和含量等工艺条件，结果表明，对于氰基在常压下的环化反应，ZnCl2是较为合适的催化剂，TPH和DCB聚合转化率最高分别可达82%和78%。

Advances of extrusion equipment for plastics film, including blown film lines, biaxially oriented film lines, calendered film lines and various accessories such as dies,air rings,screenchangers,melt bumps, are introduced.

介绍了近年来塑料薄膜生产设备的最新进展，包括挤出吹塑薄膜设备、双向拉伸薄膜设备、流延设备以及各种辅机，包括机头、风环、牵引、换网器等的技术进展。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。