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age of catalyst aguarious 太空时代
The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
I don't think he looks his age of seventy. 我感到他看起来不像70岁的人。
The age of majority is eighteen. 成年的法定年龄是18岁。
He ran away from home at the age of thirteen. 他十三岁那年就离家出走了。
At the age of thirty, Mary began to lose colour. 玛丽在30岁的年纪就红颜渐逝了。
She was orphaned at the age of ten. 她在十岁时成为孤儿。
My father retired at the age of 60. 我父亲六十岁时退休了。
My grandmother got married at the age of seventeen. 我的祖母十七岁就结婚了。
He was already balding at the age of 25. 他25岁就秃顶了。
Cole popped off at the age of twenty. 科尔在二十岁时突然死去。
He lived to be [to the age of]80. 他一直活到了80岁。
The average age of the students is 19. 学生的平均年龄是19岁。
Research %26 Development of Catalyst and Refinery of Feul Oil. 燃料油精制工艺及催化剂的研究与发展。
He was composing at the piano at the age of seven. 他7岁时就会钢琴作曲。
The activity of catalyst depends on the loading amount of Cu. 催化剂中Cu的担载量是影响催化剂的活性的一个重要因素，在0-4.;35%25的范围内，伴随着担载量的增加，吲哚的选择率同步增加。
An age of ideological confrontation. 一个意识形态对抗的年代
Initial temperature of catalyst bed is wholly too high. 提高起始反应温度使催化剂床层温度整体过高导致飞温。
He learned to multiply at the age of five. 他五岁学会做乘法。
A proper amount of catalyst will speed up the reaction. 添加适量的催化剂，会加快反应的速度。