查询词典 acetone

The result indicated that the prepolymer had good dissolubility in acetone and good reserved stability under room temperature.

研究结果表明，室温下该预聚体在丙酮中具有优良的溶解性及良好的贮存稳定性。

Then SAM precipitation was carried out by picric acid and SAM precipitated is higher than 90％. After butanone extraction, acetone precipitation and SAM sulfate or SAM double salt of sulfate and p-tosylate formation, the stable SAM salt was obtained.

结果表明，苦味酸是一种选择性较好的沉淀剂，沉淀步骤得率在90％以上，制备SAM的硫酸盐的总得率在60％以上，而硫酸对甲苯磺酸双盐的得率在50％以上，产物的纯度达到了95％以上，已经达到了国外同类产品的质量指标。

Acetone extractives in masson pinegroundwood pulp were isolated and analyzed through the employment of DEAE-Sephadex ion exchange chromatography and GC/MS.

利用DEAE－Sephadex离子交换色谱和气相色谱－质谱联用技术，对马尾松磨木浆丙酮抽出物的化学成分进行了分离及分析。

Halitosis may follow eructation from the GI tract or may be caused by systemic metabolic conditio --eg, an acetone odor with diabetes mellitus, a mousy odor with liver failure, and a urinous odor with kidney failure.

口臭也可随胃肠道的嗳气而来或由系统性代谢性疾病引起，也即丙酮味与糖尿病有关，鼠臭味与肝功能衰竭有关，尿味与肾功能衰竭有关。

At lower temperature, the interaction between the Ir particles and the adsorbed ethoxyl species is not strong enough to abstract H atom from the nearby CH3 group, and thus acetaldehyde acts as the key intermediate. Acetaldehyde can decompose to methane and CO and/or convert to acetone through decarbonylation.

低温时Ir粒子与吸附的乙氧基的相互作用的强度不足以从-CH3基团中提取H原子，此时乙醛是关键的反应中间物，乙醛可以裂解生成甲烷和一氧化碳或脱羰基生成丙酮。

The total oxidation temperature for toluene, acetone, and ethyl acetate was at 220, 260, and 280 ℃ for the catalyst calcined at 500 ℃, respectively.

该催化剂上甲苯、丙酮和乙酸乙酯的完全氧化温度分别为220、260和280℃。

The catalyst shows good activity for the oxidation of toluene, acetone and ethyl acetate.

研究了阳极氧化的电流密度和电解液种类等因素对阳极氧化膜形成的影响，以及还原时间和焙烧温度对催化剂氧化活性的影响。

Acetone, Ethyl alcohol, Toluene, Ethyl acid or Methyl chloride.

禁止使用酮类物质，普通酒精，甲苯，乙荃酸或甲基氯化物。

At the same concentration, extracts show the highest scavenging rate on the four different free radicals extracted by ethyl ether, acetone, ethyl ether and ethyl acetate, respectively.

在相同的浓度下，对自由基的清除作用最大的分别为乙醚、丙酮、乙醚和乙酸乙酯提取物。

Soluble in hexane, can be dissolved in acetone, ethyl ether and chloroform.

易溶于已烷，可溶于丙酮，乙醚，氯仿。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。