hafnium的音标?

hafnium的音标:
hafnium的英式发音音标为:['hæfniəm]
hafnium的美式发音音标为:['hæfniəm]
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    And how is it known that Mars had hafnium - 187 ?那么是如何知道火星有铪 -187 的 呢 ?This activator is acyl amine - the hafnium activator that ether is a foundation.该催化剂为酰胺 - 醚为基础的铪催化剂.Chemical form of hafnium is perchlorate or nitrat...