为我偷一支铅笔 Steal a Pencil for Me
我认为它是铅笔 I think it is pencil
须为以无铅聚氯乙烯 LEAD-FREE PVC
以锡铅或锑为基的合金 white metal
镉铅行为 behaviors of Cd and Pb
我认为这是铅笔 I think it is pencil
不可能把铅变质为金子 It is physically impossible
真空溅射层的材质为铅或铅合金。
The material of the vacuum sputtering layer is lead or lead alloy.
这为铅塔燃烧室的煤气流量、粗锌流量以及排烟温度等自动控制提供了一种可供参考的依据。
All of which will offer automatism control of gas flux, flux of spelter liquid and temperature of venting fumes in combustion chamber assort of referenced basis.
最为有名的就是铀- 238衰变为铅- 206的半衰期为45亿年，当然放射性铷和钐也同样对测算几十亿年前的物体的年龄很有用。
Most famously, uranium-238 decays into lead-206 with a half life of 4.5 billion years, though radioactive rubidium and samarium are also useful for dating things billions of years old.
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