查询词典 formic

The major volatiles of Sansa were E-3-Hexen-1-ol (14.74%), Formic acid and hexyl ester (9.52%) and they were all more than that in other varieties relatively. The major volatiles of Red Chief Delicious were 4-methyl-1, 3-pentadiene (16.37%) and Z-3-Hexen-1-ol, acetate (10.27%) and were also more than that in other varieties.

珊夏枝条挥发物主要成分（E-3-己烯－1-醇、甲酸己酯）的相对含量(14.74%，9.52%)均多于其他品种；首红枝条挥发物主要成分（4-甲基－1，3-戊二烯、乙酸叶醇酯）的相对含量(16.37%，10.27%)均多于其他品种。

The reductive coupling of aryl halide s to form the corresponding biaryls was effected with high selectivity in water,using formic hydrazide as a reducing agent in the presence of a catalytic amount of Pd/C.

在Pd/C催化下，以甲酰肼为还原剂，卤代芳烃通过还原偶联反应能高选择性地合成相应的联苯化合物。

The effect of pressure on the activity of carbon dioxide hydrogenation to formic acid was investigated.

考察了反应压力对CO〓加H〓合成HCOOH反应活性的影响。

Using ethylenediamine, urea, methanal and formic acid as base material, 1, 3-dimethyl-2-imidazolidinone was prepared via cyclization reaction and methylation.

以乙二胺、尿素、甲醛和甲酸为原料，经过环化和甲基化反应制得目标产物1，3-二甲基－2-咪唑啉酮(1，3-DMI)。

The better technology has been obtained: taking water-EG as solvent 2-imidazolidinone was prepared. The molar ratio of the methanal (36%) to the formic acid (85%) is 1:2.8, reaction temperature is 95~100℃, reaction time is 16 h, taking cuprous chloride and triethylamine as catalyst, the molar ratio of the cuprous chloride and triethylamin to 2-imidazolidinone is 1.0% while 1,3-DMI was prepared.

较佳工艺条件为：制备2-咪唑啉酮时，以水－乙二醇混合作溶剂；制备1，3-DMI时，甲醛(36%)：甲酸(85%)摩尔比为1：2.8，反应温度95~100℃，反应时间16 h，氯化亚铜和三乙胺作催化剂，用量分别是2-咪唑啉酮摩尔数的1.0%。

According to the graph of adsorption speed, a conclusion can be drawn that formic acid and acetic acid are fixed on the resin with multimolecular adsorption while propanoic acid and pentanoic acid are carried by monomolecular adsorption.

通过其吸附速度、吸附等温线的研究，得出甲酸和乙酸在该树脂上以单分子吸附为主，丙酸和成酸以多分子吸附为主，而且吸附的强弱与羧酸的解离有关，解离越强吸附越弱，反之，吸附越强。

N-formyl morpholine was synthesized using morpholine and formic acid as starting materials,phosphorous acid as catalyst and cyclohexane as water carrying agent.

以吗啉和甲酸为原料，磷酸为催化剂，环己烷为带水剂合成了N-甲酰吗啉。

N-formylmorpholine was synthesized using morpholine and formic acid as starting materials,phosphorous acid as catalyst and cyclohexane as water carrying agent.

马西功，于世涛，季开慧，刘福胜，N-甲酰吗啉的合成以吗啉和甲酸为原料，磷酸为催化剂，环己烷为带水剂合成了N-甲酰吗啉。

High performance solvent N-formylmorpholinewas synthesized from morpholine and formic acid, dehydrated through the azeotrope rectifying method using water carrying agent A.

以吗啉和甲酸为原料，利用带水剂A通过共沸精馏的方法脱水，合成了高性能溶剂N-甲酰吗啉。

As investigated, the shape of the fruit was mainly rotundity, and the color of the fruit were red, black, yellow, mauve. Variation coefficient of mineral elements, which revealed wider variation range and rich genetic diversity. Among them, Fe, the content and the variation coefficient of which was the highest(2.12 mg·100g-1 and 26.99％), it has large potential for futher selection. Ripe fruit of 12 wild myrobalan plum seedlings were analyzed using head space-solid phase microextraction and gas chromatography-mass spectrometry. The results showed considerable genetic variations in these aspects: The total content of volatile components, the classes and contents of each compounds classes, the segregation ratio, and content of main components. There were 83 compounds in total belonging to 6 classes detected in 12 wild myrobalan plum seedlings, including esters, alcohols, ketones, aldehydes, heterocycle and Hydrocarbons. Among them, Formic acid, hexyl ester, the content of which was the highest(4.33 μg·g-1),was important character impact odors.

结果表明，①新疆野生樱桃李实生株系的果实形状主要为圆形，少数为椭圆形、卵圆形、卵形和宽卵形，果实颜色有黄色、红色、紫红色和黑色等4种类型，野生樱桃李果实纵径、横径、单果重、果形指数以及可溶性固形物含量均存在一定程度的变异，遗传多样性较为丰富，其中以单果重的变异系数最大(9.13 %)；②新疆野生樱桃李实生株系果肉组织的Zn、Ca、Mg、Mn、Fe及Cu等6种矿质元素含量变异丰富，其中以Fe元素的含量（平均值为2.12 mg·100g-1）和变异系数（26.99％）最高，进一步筛选高铁性状单株的潜力很大；③从新疆野生樱桃李12个实生株系中共鉴定出醇类、醛类、酯类、酮类、烃类及杂环类等6类83种挥发性化合物，各实生株系挥发性化合物总含量、挥发性化合物种类及其含量以及主要挥发性化合物分离比率与含量等存在广泛的遗传变异，遗传多样性较为丰富，其中以甲酸己酯含量最高（平均值为4.33 μg·g-1），是野生樱桃李果实香气形成的重要特征性化合物。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。