Ketenes, notably dimethyl ketene, readily undergo oligomerization and polymerization.烯酮, 特别是二甲基烯酮, 很容易齐聚和聚合.The purity of dimethyl disulfide was determined by capillary gas chromatography.应用毛细管气相色谱法测定二甲基二硫的纯度.Marine livi...
Remove the dough from the bowl and put it on a floured surface.把面团从碗中取出，放在撒有面粉的台面上。Divide the dough into 12 even pieces and shape each piece into a ball...将面团分成12等份，每份揉成球状。Flatten the dough with a press of the hand.用手把生面...
For the peasants , the high tax in the droughty years is definitely icing on the cake.民来说, 干旱年月里征收高的税费无疑是雪上加霜.Owing to climate was being droughty from terminal late Pleistocene, so Aibihu Lake ceaselessly shrank.晚更新世晚期开始...