二酮的例句（二酮在句子中的用法）

• Hydrocortisone ( HC ), 11� � , 17α, 21 - trihydroxypregn - 4 - ene - 3,20 - dione, is an important grucocorticoid. 氢化可的松 ( hydrocortisone,HC ), 化学名称为11β,17α, 21-三羟基孕甾 -4- 烯 -3,20-二酮, 属肾上腺皮质激素类药.
• It'shows that the key step is the synthesis of 4 - methyl - dihydro - furan - 2 , 3 - dione. 研究结果表明关键步骤为原料 4- 甲基 -2, 3- 呋喃二酮的合成.
• This invention relates to a method for preparing amide diketone acids and their pharmaceutical application. 本发明涉及酰胺二酮酸类化合物及其制备方法和制药用途.
• Butanedione as feed scenting agent may improve appetite and of animal, and increase efficiency of production. 丁二酮作为饲料香味剂,可增加动物食欲及采食量, 提高生产效率.
• Diels - Alder reaction of 2 - merhylene - 1 - pheny 1 - 1.3 - butanedione catalysed by zinc chloride as lewis acid with 1.3 - cylcopentadiene was reported. 以氯化锌为路易斯酸催化剂,探讨了2 ─ 亚甲基─1 ─ 苯基 ─ 1.3 ─ 丁二酮与1.3 ─ 环戊二烯的Diels─Alder反应.
• Each capsule contains 100 mg of Androstenedione and 500 mg of Tribulus Terrestris. 每粒胶囊含有100毫克雄烯二酮和500毫克刺蒺藜.
• In low temperature, reaction of ketone with sodium acetylide synthesized 1 - ethynyl - 2,3, 4,5 - tetramethyl - 2 - cyclopentene - 1 - ol; 1,2 - diphenyl - 2 - hydroxy - 3 - butine - 1 - one; 3,4 - diphenyl - 1,5 - hexadiine - 3,4 - diol and 3,4 - dipheny 报道了在低温条件下, 以邻二酮和α-环烯酮为原料与炔钠反应,合成了2,3, 4,5-四甲基-1-乙炔基-2-烯-环戊醇、1, 2 - 二苯基 -2 - 羟基 -3 - 丁炔 -1 - 酮、3, 4 - 二苯基 -1,5-己二炔-3,4 - 二醇和3,4 - 二苯基 -3 - 环戊烯 -1 -酮4种化合物.