This approach underpins much of my research on energy and nutrient flux, and has involved both natural abundance and enriched isotope tracing techniques.

该方法巩固了对于我在能量和营养流的研究，并结合了自然丰度和浓缩同位素跟踪技法。

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To make fuel for electricity-generating reactors, uranium is enriched to less than 5 percent of the isotope U-235.

为将燃料做成电能反应堆，铀被浓缩至U-235同位素含量5%以下。

youdao

The combination of enriched stable isotope tracer studies and activation analysis techniques has become an ideal and reliable technique, especially in the fields of biology and medicine.

浓集的稳定同位素示踪研究和活化分析技术相结合已成为一种理想可靠的技术，在生物医学中更显示出它的特色。

youdao

If enacted in its current form, Section 621 of this year's Energy bill , by contrast, would allow foreign companies to receive U.S. HEU for use in medical isotope production without having to move toward a low-enriched uranium (LEU) target, even if it is technically feasible for them to do so.

CENTERFORSECURITYPOLICY: Kyl and Schumer move to monitor uranium exports