用该方法可得出检测样品的原子序分布图和电子密度分布图，用以分析油田岩芯以及区别其内含杂质。
By the dual-energy ct method of nondestructive analysis, we can obtain the distribution images of both atomic number and electronic density or analysing petroleum core and distinguishing inclusions.
稀土金属：一个化学元素大家族中的任何一种，包括钪(原子序21)、钇(原子序39)以及从57号元素(镧)到71号元素。
Rare earth metal: Any of a large class of chemical elements including scandium (atomic number 21), yttrium (39), and the 15 elements from 57 (lanthanum) to 71.
稀土金属：一个化学元素大家族中的任何一种，包括钪(原子序21)、钇(原子序39)以及从57号元素(镧)到71号元素。
Rare earth metal: Any of a large class of chemical elements including scandium (atomic number 21), yttrium (39), and the 15 elements from 57 (lanthanum) to 71.
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