丙二烯

基本解释 (translations)

allene  ·  propadiene

与丙二烯相关的网络例句 [注：此内容来源于网络，仅供参考]

Furthermore, the mechanism of isomerization between propyne and allene mediated by HCo 〓 has been proposed.

此外，基于反应的自由能曲线，提出了HCo〓催化丙炔和丙二烯异构化反应机理。

The reaction takes place as soon as 3a is dissolved in solution. With the presence of a tethering terminal vinyl group bound to the vinylidene ligand, the [2+2] cycloaddition of two C=C double bonds readily occurred.

当有一乙烯基键结在丙二烯基上，分子内的两个碳碳双键会马上发生[2+2]的环化加成反应。

The iron sulfide cleaning formulation with the surfactant, allene diamine, citric acid and EDTA as the main ingredients could react rapidly with the iron sulfide to form ethylene and element sulfur in the presence of catalyst.

一种以表面活性剂、丙二烯二胺和柠檬酸、EDTA为主要组分的硫化亚铁清洗配方，在催化剂存在的条件下能迅速与硫化亚铁发生反应，生成乙烯和单质硫。

HCo 〓-catalyzed hydroformylation and isomerization of allene and propyne Allene hydroformylation favors the linear anti-Markovnikov product in high regioselectivity both kinetically and thermodynamically. The origin of this regioselectivity comes from the enhanced stability of the η〓-allylic intermediate (η〓-CH〓CHCH〓 Co 〓.

HCo〓催化的丙二烯和丙炔氢甲酰化反应及异构化反应 HCo〓催化丙二烯氢甲酰化反应的区域选择性主要由不可逆的丙二烯插入步骤决定，动力学和热力学因素都有利于形成anti-Markovnikov中间物种(η〓-CH〓CHCH〓)Co〓，形成Markovnikov中间物种Co〓是不具有竞争性的。

Then the paper used the projection operator to structure the normal coordinate component,thus combined 15 normal vibration patterns of propadiene molecule.

先对丙二烯振动模式进行分类及构造投影算符，再用投影算符构造简正坐标分量，从而组合出丙二烯分子的15个简正振动模式。

The main objective of this research project is to modify the Methyl-Acetylene/propadiene selective hydrogenation reaction system of the No.3 Naphtha Cracker in CPC. The original gas phase reaction system was redesigned to a liquid phase reaction so that higher propylene selectivity was achieved and lower rates of propane and green oil were produced. To recover effectively the higher production of valuable propylene from the reaction system, the following fractionator was also redesigned.

本研究之目的在於修改中油公司三轻工场老旧的甲基乙炔／丙二烯选择性氢化气相反应系统，使成为液相反应系统，藉由液相反应的优异性，提高由MAPD氢化得到丙烯之选择率，同时降低丙烷及绿油产率，以增加丙烯产率，另亦修改丙烯精馏系统，以提升蒸馏塔提纯之效率。

The reaction results of the selective hydrogenation of MethylAcetyleneand Propadiene in C 3 distillate by catalytic distillation were investigated with randomlypacked structure of packingtype catalyst, the combined structure of sieve tray and packingtype catalyst as well as the structure with interlaced packing and ordinary catalyst.

考察了填料状催化剂散装结构、筛板填料状催化剂复合结构、规整填料与普通催化剂交错排列结构等用于C3 馏分中丙炔、丙二烯催化蒸馏选择加氢过程的反应效果，综合考虑催化剂制备的难易、工业装置长周期运转的必要性、传质对反应的影响等因素，推荐在工业装置上采用规整填料与催化剂交错排列结

The reactions of benzaldehydes bearing an ortho substituent group on the phenyl ring with propargyl bromide may yield a mixture of regioisomers (homopropargyl and homoallenyl alcohols) or a single homoallenic alcohol due to the steric effect.

邻位上的取代基由于位阻原因往往使反应得到含有高丙二烯醇和高炔丙醇的混合物或者单一的高丙二烯醇。

Moreover, MeJA induced defense genes, such as pathogenesis-related proteins (PR2a), phenylalanine ammonia-lyase, BX9, and TPS. MeJA also increased DIMBOA and Vannillic acid content of leaves and roots significantly but leaf p－Hydroxybenzoic acid concentration was decreased significantly and Protocatechuric acid was produced in roots only.

1MeJA叶片处理能诱导叶片和根系中丙二烯氧化物环化酶基因、糖基转移酶（BX9）基因、苯丙氨酸转氨酶基因的表达，使叶片和根系中丁布含量升高，同时，6μL/L MeJA处理使第二叶中原儿茶酸含量显著降低，诱导根中产生原儿茶酸，使第二叶中香草酸含量和根中未知物质峰面积显著增大。

Feeding for 24h by third instar larvae of the maize stalk borer induced farnesyl pyrophosphate synthase gene expressing, but had no effect on expression of AOC, BX9, PAL and PR2a genes and DIMBOA content.

3玉米螟3龄幼虫处理24h能诱导玉米根中法呢烯基焦磷酸合成酶基因表达，但不能诱导丙二烯氧化物环化酶、β－1，3葡聚糖酶基因（PR2a）、糖基转移酶（BX9）、苯丙氨酸转氨酶基因表达，同时对第二叶和根中丁布含量无显著影响，使第二叶对羟基苯甲酸及第三叶丁布、对羟基苯甲酸、香草酸含量显著降低。

与丙二烯相关的网络解释 [注：此内容来源于网络，仅供参考]

allene：丙二烯

其他含有碳与碳之间双键的化合物,如丙烯和丙二烯(allene)等也具有类似乙烯的生理效应,但效果较差. 而二氧化碳却能和乙烯抗衡,竞争和细胞表面结合的位置,具有抑制的功能. 虽然二氧化碳分子也具有双键,化学结构与丙二烯相近,

allene：丙二烯 二烯烃 丙二烯衍生物

Allenby | 艾伦比 | allene | 丙二烯 二烯烃 丙二烯衍生物 | allenic compound | 丙二烯系化合物

allene polymer：丙二烯聚合物

乙炔类聚合物 acetylenic polymer | 丙二烯聚合物 allene polymer | 二乙炔聚合物 diacetylene polymer

allene polymer：丙二烯橡胶

alkyllithium initiator|烷基锂引发剂 | allene polymer|丙二烯橡胶 | allyl resin|烯丙基树脂

DAP：间苯二甲酸二烯丙酯

第五节 2009年华中地区间苯二甲酸二烯丙酯(DAP)行业分析第六节 2009年西南地区间苯二甲酸二烯丙酯(DAP)行业分析第七节 2009年西北地区间苯二甲酸二烯丙酯(DAP)行业分析第五章 间苯二甲酸二烯丙酯(DAP)行业投资与发展前景

diallyl phthalate：酞酸二烯丙酯

diallyl maleate 马来酸二烯丙酯 | diallyl phthalate 酞酸二烯丙酯 | diallyldimethylammonium chloride 二烯丙基-二甲基氯化铵

diallyl sulfide：二烯丙硫醚

[二]烯丙醚 diallyl ether; allyl ether | 二烯丙硫醚 diallyl sulfide | 二烯丙[基]硫脲 diallyl thiourea

diallyl maleate：顺丁烯二酸二烯丙酯

"diallyl isophthalate","异酞酸二烯丙酯" | "diallyl maleate","顺丁烯二酸二烯丙酯" | "N;N-diallylmelamine","N;N-二丙烯三氰胺"

propadiene：丙二烯

proof stress 试验应力 | propadiene 丙二烯 | propagate 传播

DAF：富马酸二烯丙酯

下游介绍二、富马酸二烯丙酯(DAF)行业下游发展状况分析三、富马酸二烯丙酯(DAF)行业下游对富马酸二烯丙酯(DAF)行业影响力分析第十二章 富马酸二烯丙酯(DAF)重点企业发展分析第十三章 富马酸二烯丙酯(DAF)行业投资策略分析第