搜索 - 科创

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闪烁体发射的波长基本和gamma射线能量没有关系。gamma射线光子进入闪烁体后，被闪烁体散射吸收能量，激发闪烁体中的原子到激发态，然后放出光子。不同闪烁体材料产生一个光子所需要的gamma射线能量不...

RGA是好东西嘛，多多益善，以至于我收了7套其中有一台坏的被我拆件了。 HPGe我自己鼓捣了一下，抽真空烘烤确保它不会掉分辨率，但右侧这只Streamline的前放是彻底挂掉了，所以后期要画板子重...

在几十年前，高性能舵机是非常昂贵的，甚至是无法实现的。AIM-9B（响尾蛇）才7个晶体管。现在一个开源飞控的性能，大概相当于1980年的超级计算机。在几十年前，高性能舵机是非常昂贵的。即使是现在司空见...

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