丙酮

Uranium solution is obtained electrolytically by reducing uranyl ion on mercury cathode. The effect of the addition of various aminopolycarboxylic acids (such as EDTA, DTPA, CyDTA and TTHA) and organic water-miscible solvents (such as CH3OH, C2H5OH and CH3COCH3) on the stability of ura-nium in air has been investigated. The absorption spectra of uraniumand uraniumin 1 mol/l and 9mol/l hydrochloric acid solutions are examined.

本文采用汞阴极电解还原法制备了铀溶液，研究了在盐酸介质中各种氨羧络合剂乙二胺四乙酸二钠、二乙三胺五乙酸、1，2-环已烷二胺四乙酸、三乙基四胺六乙酸和水溶性有机溶剂甲醇、乙醇和丙酮的存在对铀稳定性影响，测定了在不同盐酸浓度中铀和铀的吸收光谱。

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。

The method and technical development of acetonation of hexabasic alcohol , and its application in the synthesis of one enantiomer of drugs were reviewed.

论述六元糖醇丙酮化作用的方法和工艺进展，以及其在合成光活性单一对映体药物中的应用。

Halitosis may follow eructation from the GI tract or may be caused by systemic metabolic conditions--eg, an a cet one 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。

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。

The results of comprehensive evaluation indicated that the effect of the suitable concentration extracts were better, the effect of Ether extract 1000mg/L

提取物浓度与抗寒效果之间无明显的相关性，植物材料前胡的抗寒作用可能是前胡乙醚、丙酮、三氯甲烷等提取物中一种或多种成分的诱导和保护作用的共同结果。

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℃。

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。