丁烯酸

It is broken down via phenylalanine to give acetyl CoA and fumaric acid.

它通过苯丙氨酸降解出乙酰辅酶 A 和反丁烯二酸。

Water, Beta-glucan, Ascorbic acid, Tri Sodium Ascorbyl Palmitate Phosphate, Magnesium L-ascorbyl -2-phosphate, PEG-60 hydrogenated castor oil, Lecithin, Coceth-7 / PPG-1-PEG 9 lauryl glycol ether/PEG 40 hydrogenated castor oil, DL-panthenol, Retinyl, palmitate, Anthemis Nobilis Flower extracts, Pinebark extract, Phellinus linteus extract, Phellinus linteus / Rice Ferment Extract, Onion extract, Aralia Elata Root Extract, Grape extract, Sandalwood oil, Myrtle oil, Orange oil, 1,3-Butylene glycol, Glycerin, Xanthan gum, Tocopheryl acetate, Ethanol, Methyl paraben

水， β-葡聚糖，抗坏血酸、三磷酸抗坏血酸棕榈酸酯钠、维他命 C 磷酸镁盐、聚乙二醇- 60氢化蓖麻油、卵磷脂、椰油醇聚醚-7 / PPG-1-PEG-9 月桂二醇醚/聚乙二醇40氢化蓖麻油，消旋泛酰醇，视黄醇，棕榈酸盐，白花春黄菊花提取物， Pinebark提取物，桑黄提取物，桑黄/水稻发酵提取物，洋葱提取物，辽东楤木根提取物，葡萄提取物，檀香油，桃金娘油，橙油， 1，3 -丁烯乙二醇，甘油，黄原胶，生育酚，乙醇，羟苯甲酯

Water,glycerin,rosa centifolia flower water,butylene glycol,centaurea cyanus flower water,peg-40 hydrogenated castor oil,propylene glycol,ppg-26-buteth-26,phenoxyethanol,methylparaben,sorbic acid,benzophenone-4,pentadecalactone,citrus aurantium dulcisoil,panthenol,menthyl lactate,sodium hydroxide,glycyrrhiza glabraroot extract,aesculus hippocastanumseed extract,citrus aurantium amaraoil,allantoin,limonnene,linalool,blue 1(ci 42090),yellow 5ci 19140

水，甘油，千叶蔷薇花水，丁烯二醇，矢车菊花水，PEG-40氢化蓖麻油，丙二醇，PPG-26-丁醇聚醚-26，苯氧乙醇，对羟基苯甲酸甲酯，山梨酸，二苯甲酮-4，环十五内酯，甜橙油，泛醇，乳酸孟酯，氢氧化钠，甘草根萃取，七叶树籽萃取，苦橙油，尿囊素，柠檬精油，芳樟醇，蓝，黄水：几乎所有护肤品成分第一位都是水。

A new solid acid based on heteropolyacid has been proved to be a useful catalyst for the synthesis of dibutyl maleate .

新催化剂在顺丁烯二酸二丁酯的合成反应中显示很好的活性和温和的反应条件。

In comparison with the organic solvents as reaction medium, higher conversion was achieved the tert-ethyl valerate could be formed in the ionic liquid medium.

当反应体系中存在水时，有特戊酸生成。表明反应中2，2，4-三甲基戊烷首先发生β-断裂反应，生成叔丁基正碳离子和异丁烯。

The coupling process of dehydrogenation of 1,4-butanediol and hydrogenation of dimethyl maleate over CuO/SiO2 catalysts to produce one important fine chemical γ-butyrolactone was carried out in a continuous fixed bed reactor under atmospheric pressure.

和传统的反应过程相比，耦合反应提高了顺丁烯二酸二甲酯加氢和1，4-丁二醇脱氢活性。

Aim To study the relationship between the structures of a series of 4,4-diaryl-3-butenyl derivatives of nipecotic acid and guvacine and their inhibition activity of the γ-aminobutyric aciduptake.

目的研究3-哌啶甲酸和四氢烟酸的4，4-二芳基-3-丁烯衍生物结构和对γ-氨基丁酸摄取抑制活性之间的关系。

As superplasticizer , a series of comb-shaped copolymers of polycarboxylic acid were synthesized by polyoxyethylene allyl methyl diether, maleic anhydride, and styrene with different initiators,and esterified with PEO-n.

以聚氧乙烯甲基烯丙基二醚、顺丁烯二酸酐、苯乙烯等为共聚单体，采用不同引发剂，合成了一系列聚羧酸型梳状共聚物超分散剂，并以PEO n单酯化得酯化产物，研究了共聚物的结构、组成、添加量等对水泥粒子分散性能的影响。

The influences of the reaction conditions on the grafting rate of dibutyl maleate to black N330 and the grafted black N330 on the physical properties of NR vulcanizate were investigated.

探讨炭黑N3 3 0表面固相接枝顺丁烯二酸二丁酯的反应条件对DBM接枝率的影响及炭黑接枝DBM对NR硫化胶物理性能的影响。

Employing CuI(5 mol%), N,N-dimethylglycine hydrochloride(10 mol%) and K_2CO_3(2 equiv.) in refluxing THF as the optimized reaction conditions,the four-membered 4-alkylidene-2-azatidinones could be efficiently synthesized.

当以3-溴-3-N-苯基-丁烯酰胺为底物，在5 mol%CuI为催化剂，10 mol%N，N-二甲基甘氨酸盐酸盐为配体，2当量K_2CO_3作碱，THF回流的反应条件下，可以高效的合成2-亚甲基-4-氮杂环丁酮类化合物。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。