1) block carriage
挡铅托架
2) mudguard support
挡泥板托架
3) lead-alloy block
挡铅
1.
The study about combined multileaf collimator with lead-alloy blocks form a mantle field in radiotherapy of Hodgkin' s disease
多叶光栅与挡铅联合设野在斗蓬野布置中的研究
4) lead block technology
铅挡技术
1.
Objective To apply lead block technology to the interdiction of X-ray destroy from linear accelerator to normal tissues and sensitive organs so as to treat large fields and irregular malignant lymphoma.
目的:利用铅挡技术来阻断直线加速器X射线对正常组织或敏感器官的破坏,以治疗大面积、不规则恶性淋巴瘤。
5) lead block
铅挡块
1.
Make,application and quality control of low melting-point lead block;
低熔点铅挡块的制作、应用以及质量保证
6) lead block fields
铅挡野
1.
The measurement and analysis of output factor of lead block fields for high energy electron beam of Varian 2300 C/D linear accelerator;
Varian 2300 C/D直线加速器高能电子束铅挡野输出因子的测定与分析
补充资料:铅-铅测年
分子式:
CAS号:
性质:238U和235U两个母体铀同位素的特性实质相同,所产生的放射性成因206,207Pb的方程可合并为(207Pb/206Pb)=[(235U/238U)](t-1)。235U/238U现在的比值是1/137.8,利用非放射性成因‘稳定’204Pb作为参考同位素,作(207Pb/204Pb)与(206Pb/204Pb)的Pb-Pb等时线,应用方程计算年龄,式中(207Pb/204Pb)和(206Pb/204Pb)0是初始比值。
CAS号:
性质:238U和235U两个母体铀同位素的特性实质相同,所产生的放射性成因206,207Pb的方程可合并为(207Pb/206Pb)=[(235U/238U)](t-1)。235U/238U现在的比值是1/137.8,利用非放射性成因‘稳定’204Pb作为参考同位素,作(207Pb/204Pb)与(206Pb/204Pb)的Pb-Pb等时线,应用方程计算年龄,式中(207Pb/204Pb)和(206Pb/204Pb)0是初始比值。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条