Based on the reactions , this paper reports research for synthesizing benzaldehyde.简要介绍以此类方法对合成苯甲醛的研究.Natural benzaldehyde is prepared by hydrolysis cassia leaf oil.从桂叶油出发,通过碱性水解制备天然苯甲醛.Pitch resin was synthesized from b...
Empowering the underprivileged lies in assuring them that education holds the real source of power...帮助贫困人民就要让他们相信教育是真正的力量源泉。Is Athens undertaking a risk in empowering such a tribunal?阿西娜赋予这个法庭权力,是否过于冒险?Empowering the un...
The soldiers crept carefully down the rocky passageways.士兵们蹑手蹑脚小心翼翼的爬下布满岩石的过道.I have spent many a morning with my wife gathering mussels along the rocky beaches of Little Compton.我和妻子好几个上午都在小康普顿的岩石滩上采拾贻贝。The rhino broke ...