总共有485块锆石内部带有包体，其中有十几块包体中含有放射性微量元素，研究者可以根据它们来测定包体的年代。
A total of 485 zircons held inclusions, and about a dozen or so of these contained radioactive trace elements that allowed the researchers to determine their ages.
介绍了用XRF（X射线荧光光谱法）测定锆英石质耐火材料中的锆含量的定量分析方法。
The quantitative analysis is described for the zirconium content by use of XRF(X-ray fluorescence method) zircon stone refractory in this paper.
采用EDTA滴定法测定了稀土镁锆中间合金中的锆。
Zirconium in rare earth - magnesium - zirconium master alloy was determined by EDTA titrimetry.
报道了锆-钙-茜素红s异多核配合物的形成，共显色效应的光度特性及测定锆的最佳条件。
The formation of zirconium -calcium -alizarine red s mix - polynuclear complex and its co-colouration effect have been investigated.
利用物理测试方法，如X衍射和红外光谱等方法，测定锆石结构的完整性，进而划分锆石类型。
The completeness of zircon texture is determined by using physical determination method such as X-ray diffraction analysis and infrared absorption spectroscopy so as to divide the types of zircon.
本文介绍了锆及锆合金中微量镁的原子吸收光谱测定方法。
In this paper the Flame atomic absorption spectrophotometric method has been investigated to determine the trace magnesium in Zirconium and its alloys.
中子能量用铌锆活度比法测定。
The neutron energies were determined by activity ratios of Nb and Zr foils.
应用离子探针shrimp测定锆石铀-铅年龄时，锆石选点至关重要，它将直接影响实验结果的可靠性和准确性。
When dating zircon U-Pb ages by SHRIMP, choosing the target points of zircon is very important as they directly affects the reliability and accuracy of the results.
应用离子探针shrimp测定锆石铀-铅年龄时，锆石选点至关重要，它将直接影响实验结果的可靠性和准确性。
When dating zircon U-Pb ages by SHRIMP, choosing the target points of zircon is very important as they directly affects the reliability and accuracy of the results.
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