Analogically, selectivity of 95 % - 97 % were att ained with Lindlar catalyst poisoned by lead.以Lindlar催化剂合成芳樟醇,脱氢芳樟醇转化率为99%～100%, 合成芳樟醇选择性为95%～97%.In dreams we think analogically.梦作类比的思考....
There were icicles hanging from the eaves.屋檐下挂着冰凌。The water formed into icicles on the window.窗上的水结成了冰柱.Icicles hang from tree braches in winter.冬天树枝上挂着冰柱....