英汉双语例句-生物医药大词典

Radioisotope dating of the impact-melt samples—rocks that melted when an asteroid or comet struck the moon, therefore revealing when an impact occurred—shows that all these basins formed in a narrow interval between 3.9 billion and 3.8 billion years ago.

中文意思：
利用放射性同位素为撞击熔融物（在小行星或彗星撞击月球时熔化的岩石，因此它们能显示撞击发生的时间）定年，显示这些盆地都在39~38亿年前一个很短的时间内形成。

以下为相关句子列表(点击查看，可以看对应的解释）：

	Radioactive waste must be carefully stored until it can safely be disposed of.			人们在安全处理掉放射性废料之前，一定要把它仔细储藏起来。
	Radioactive waste refers to waste that is radioactive or is contaminated with radioactive material, including the spent nuclear fuel pending final disposal.			五放射性废弃物：指具有放射性或受放射性物质污染之废弃物，包括备供最终处置之用过核子燃料。
	Radioactivity refers to the phenomenon of emitting ionizing radiation when a radionuclide spontaneously disintegrates.			二放射性：指核种自发衰变时释出游离辐射之现象。
	Radiographic studies and pathological findings are demonstrated as well.			其放射学检查及病理切片结果亦呈现典型的肺肿瘤栓塞变化。
	Radiographically, periosteal thickening and increases in pericortical 99Tcm-MDP uptake in bone scans may be seen.			放射线的证据包括了骨膜增生和核医骨扫瞄下?
	Radioisotope dating of the impact-melt samples—rocks that melted when an asteroid or comet struck the moon, therefore revealing when an impact occurred—shows that all these basins formed in a narrow interval between 3.9 billion and 3.8 billion years ago.			利用放射性同位素为撞击熔融物（在小行星或彗星撞击月球时熔化的岩石，因此它们能显示撞击发生的时间）定年，显示这些盆地都在39~38亿年前一个很短的时间内形成。
	Radiological health protection standard for using sealed radioactive sources in oil and gas-fild logging.			油(气)田测井用密封型放射源放射卫生防护标准.
	Radiological protection monitoring procedure Part 1:Industrial X-ray detection.			放射卫生防护监测规范第1部分：工业X射线探伤.
	Radiological protection requirement for design of γ-ray teletherapy rooms.			远距治疗室设计的放射防护要求。
	Radiological protection standards for gauges containing sealed radioactive source.			含密封源仪表的放射卫生防护标准.
	Radiological protection standards for the patient in clinical nuclear medicine.			临床核医学中患者的放射卫生防护标准.