在烯烃聚合物合成中茂金属催化剂正在替代传统催化剂。
Metallocene catalysts are replacing traditional catalysts in syntheses of olefin polymers.
他的爸爸和妈妈，还有一位中医师，运用了一种几千年流传至今的复建方法来照顾护理倪茂信恢复健康。
His mother and his father, a doctor of Chinese medicine, nursed him back to health using healing practices that dated back thousands of years.
咨询机构“航空经济学”的基斯 麦克茂拉认为，审批如此缓慢，也已经损害到了维京航空，它现在不得不在严峻的气氛中迈入市场。
The delays in certification have also hurt the airline, which is now set to enter the market at a tough time, says Keith McMullan of Aviation Economics, a consultancy.
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