?初级辐射
... primary radionuclides 原始放射性核素 primary rays 初级辐射 primary reactor coolant system 反应堆一次冷却系统 ...
原始X射线
原宇宙射线 ; 初级宇宙线
The data gathered provided the first accurate measurement of the composition of primary cosmic rays.
ENGADGET: AMS detects excess of positrons, could suggest existence of dark matter
Patients don't care if a drug meets the original primary endpoint of Dendreon's study, an improvement in X-rays, says Penson.
FORBES: Magazine Article
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。