查询词典 methyl

"Methyl alcohol wood alcohol Once produced by destructive distillation of wood , it is now usually made from the methane in natural gas."

曾经将木材进行破坏性的干馏来生产甲醇，现在通常用天然气中的甲烷来制取。

Methyl alcohol calls wood Chun again and occupies a 1/3 of sugar, this material F is marked for the serious metabolism poison and anaesthetic.

甲醇又称木醇，占代糖的1/3，此物质己被划为严重的代谢性毒物和麻醉剂。

Methods: Zinc has catalysis ability in the system of oxidze xylenol orange in medium, and the discoloration extent of methyl orange has a linearity to the content of zinc. Based on this fact, a new photometric method for the determination of zinc was proposed.

在H2SO4介质中，微量锌对过氧化氢氧化二甲酚橙的反应体系具有催化作用，且二甲酚橙被氧化后的褪色程度ΔA与微量锌的含量有线性关系，据此建立了二甲酚橙褪色光度法测定微量锌的新方法。

Tetragonal phase ZrO2 nano-powders containing 3%Y2O3 was prepared via the coupling route of water-oil emulsion with methyl oxalate homogenous precipitation, in which xylol was used as the oil phase, span-80 as the surfactant, and an aqueous solution containing zirconium as the water phase.

摘 要：采用二甲苯为油相， span-80为表面活性剂， Zr(NO3)4(3Y)的水溶液为水相的W/O 乳浊液和草酸二甲酯均匀沉淀结合法制备四方相ZrO2(3Y)纳米粉。

Their structures were elucidated on the basis of chemical and spectral analysis. RESULTS: Twelve compounds were isolated from the 95% ethanol extract of the aerial parts of L.rotata. Their structures were identified as luteolin (1), luteolin 7-O-β-D-glucopyranoside (2), apigenin (3), apigenin 7-O-β-D-glucopyranoside (4), apigenin7-O-6-(E-p-coumaroyl-β-D-galactopyranoside (5), tricin (6), acacetin (7), genkwanin (8), lamiophlomiol A (9), lamiophlomiol B (10), shanzhiside methyl ester(11)and syringic acid (12), respectively.

结果：从独一味地上部分的乙醇提取物中分离得到了12个化合物，分别鉴定为木犀草素(1)、木犀草素7-O-β-D-吡喃葡萄糖苷(2)、芹菜素(3)、芹菜素7-O-β-D-吡喃葡萄糖苷(4)、芹菜素7-O-（6-反式－对－香豆酰基）－β-D-半乳糖苷(5)、小麦黄素(6)、刺槐素(7)、芜花素(8)、独一味素A(9)、独一味素B(10)、山桅苷甲酯(11)及丁香酸(12)。

The-methyl-β-methoxyacrylate compounds containing substituted pyrazole ring I-14、I-16 had good acaricidal activity with 100% control of T.

含吡唑环的甲氧基丙烯酸酯类化合物I-14、I-16在150 mg/L浓度下具有很好的杀螨活性。

After the diazotization ,2-aminophenol-4-(2-'carboxy)sulfanil phenylamine was coupled with acetoacetanilide,2-naphthol,1-phenyl-3-methyl-5-pyrazolone,1-naphthol-4-sulfonic acid,separately to get the different diazotized compounds,then complexed with potassium chromium sulfate or cobaltous chloride to obtain the yellow,orange,red,purple,blue and other colour dyestuffs.

2-氨基苯酚-4-(2'-羧基)磺酰苯胺重氮化，分别与乙酰乙酰苯胺、2—萘酚、1-苯基-3-甲基-5-吡唑啉酮、尼文酸、1-乙酰氨基-7-萘酚等偶合，得到不同的偶氮化合物，然后分别与硫酸铬或氯化钴进行络合反应，得到黄、橙、红、紫、蓝多种颜色染料，并进行了毛织品的染色实验。

A novel route for synthesis of methyl acetoacetate from acetone and dimethyl carbonate over solid base catalysts was proposed.

以碳酸二甲酯与丙酮为原料，在固体碱上合成乙酰乙酸甲酯，并考察了反应温度、反应时间、催化剂用量和原料摩尔比等因素对反应结果的影响。

The influence of reed produced allelopathy material eathyl-2-methyl acetoacetate on respiration action, photosynthesis action and antioxidant enzymes system of Microcystis aeroginosa were studied.

研究了芦苇产生的化感物质2-甲基乙酰乙酸乙酯对铜绿微囊藻呼吸作用、光合作用和抗氧化酶体系的影响。

N,N-Dihydroxyethyl-acetoacetamide,the raw material of the borate ester bonding agent,was synthesized from methyl acetoacetate and diethanolamine .

二乙醇胺与乙酰乙酸甲酯反应合成了硼酸酯键合剂原料N，N-二羟乙基乙酰乙酰胺。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。