There will therefore be very little diffraction parallel to the edges of the slit . 因此，在平行于狭缝两端边界的方向上，几乎没有什么衍射。
A-fe2o3 (haematite) was one of the first compounds to be studied by neutron diffraction . A-Fe2O3（赤铁矿）是中子衍射最先研究的化合物之一。
The sample should not be so large as to increase unduly the width of the diffracted beam . 样品不应当过分大，以致不恰当地增加了衍射束的宽度。
The geometry of a conventional diffraction experiment with a solid or liquid is illustrated in fig. 355 . 图355是固体和液体的一般衍射实验的几何关系图。
It diffracts the diffracted beam which effectively means that it generates an inverse transform . 它对衍射光束再发生衍射，这实际上意味着它产生了一个逆变换。
As a natural limit for angular resolution, one may take the angular size of the central diffraction disk . 我们可以取中心衍射环的角直径作为角分辨率的一种自然极限。
That region of the plate is quite small and so the cone of diffracted rays, for the most part, misses it . 相板上的这一区域是很小的，因此衍射光线锥的绝大部分不通过它。
Only with very high-flux reactors is it usually possible to employ diffractometers of high angular resolution . 只有对非常高通量的反应堆，才可能应用高角分辨率的衍射计。
the spectrograph uses a concave diffraction grating that provides a wavelength dispersion of 4. 2a°/mm in the first order. 光谱仪用了一块凹面衍射光栅，第一级光谱的色散度为42埃毫米。
Amazingly enough, a beam of electrons had thus been diffracted in a manner completely analogous to a light wave bouncing off a reflection grating . 一束电子波衍射的方式，同光波从一个反射光栅上弹回的方式完全类似，这真是不可思议。
