1·They took a crystal, this is a single crystal of nickel that has regular planes of atoms, and those planes are spaced on the order of an angstrom or less apart, and they irradiated this with x-rays.
他们取了个晶体，一个具有规则原子平面的，镍晶体，这些面间距差不多也是一埃或者更少，它们放射出X射线。
2·And so I went through the math on this and said suppose I wanted to be really sloppy and I wanted to say if the delta X, the uncertainty in position is on the order of one angstrom.
我算完它，并说假如我想很草率，并且我想说如果x的增量，即位置的不确定度，相当于一埃。