He started for Dot's bedroom and Myrtle held him back.他正要去多特的卧室，被默特尔拦住了。Myrtle sat huddled on the side of the bed, weeping.默特尔缩着身子坐在床边哭泣。Myrtle gave a brittle laugh.默特尔冷笑了一声。...
To establish a method of GC detection of chloroacetone in the air of workplace.建立工作场所空气中氯丙酮气相色谱测定方法.Benzbromarone was synthesized from salicylaldehyde by condensation with chloroacetone, reduction, acylation, demethylati...