And how is it known that Mars had hafnium - 187 ?
那么是如何知道火星有铪 -187 的 呢 ?
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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.
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Chemical form of hafnium is perchlorate or nitrate.
铪的化学形态为过氯酸盐或硝酸盐.
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Why can you always have vexed thing hafnium?
为什么总是会有烦恼的事铪?
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Non hafnium superalloy DZ 4 , which is widely applied in service aero engines in present, is introduced.
介绍了目前在役发动机上使用最多的无铪定向凝固合金DZ4及其可铸性.
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The extraction separation process for zirconium and hafnium with MIBK was briefly reviewed in this paper.
简要评述了用甲基异丁基酮(MIBK)萃取分离锆铪方法的基本原理、分离工艺和条件、萃取设备.
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Despite its cure for leakage power, adding hafnium creates headaches for the process integration engineer.
添加铪基本解决了泄漏功耗问题, 不过铪也让工艺集成工程师头疼不已.
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