Isoamyl butyrate was synthesized by using ceric sulfate as the catalyst.以硫酸高铈为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl butyrate was synthesized by using gallium sulfate supported on silica gel as the catalyst.以自制的硅胶固载硫酸镓为催化剂,正丁酸和...
On closer inspection, aardvark appears to include other animal features as well.再近距离仔细观察就会发现, 土豚身上似乎还有其他动物的特征.Aardvark is a blue and small mammal.食蚁兽先生是一种蓝色的小型哺乳动物.Aardvark is a small and blue mammal.食蚁兽先生是一种小型的蓝色哺乳动物....