1
the diffraction of [light/waves]
of 后接衍射的对象；diffraction 通常作不可数名词。
The diffraction of light can be observed when it passes around a sharp edge.
当光绕过锐利边缘时，可以观察到光的衍射。
衍射
diffractions — plural of diffraction
先理解核心含义，再看它在真实句子里的用法。
衍射
the deflection of light rays passing near sharp edges or through narrow slits, producing fringes of light and dark bands
The diffraction of light can be observed when it passes around a sharp edge.
当光绕过锐利边缘时，可以观察到光的衍射。
波绕过障碍物的弯曲。
The bending of a wave around an obstacle.
电磁波通过几何结构(如狭缝)时被分解,随后通过干涉重建的现象。
The breaking up of an electromagnetic wave as it passes a geometric structure (e.g. a slit), followed by reconstruction of the wave by interference.
The rainbow colors on the back of a CD are caused by the diffraction of light.
光盘背面的彩虹颜色是由光的衍射引起的。
When a laser beam passes through a narrow slit, diffraction makes the beam spread out.
当激光束穿过狭窄的狭缝时，衍射会使光束散开。
We observed the diffraction of light around a razor blade's edge in the physics lab.
我们在物理实验室观察到了光绕过剃须刀片边缘时的衍射。
of 后接衍射的对象；diffraction 通常作不可数名词。
The diffraction of light can be observed when it passes around a sharp edge.
当光绕过锐利边缘时，可以观察到光的衍射。
through 后接衍射发生的通道，如狭缝或小孔。
Diffraction through a narrow slit creates a series of bright and dark bands.
通过狭缝的衍射会产生一系列明暗条纹。
by 后接引起衍射的物体，强调作用来源。
Diffraction by a sharp edge causes the light beam to spread slightly.
锐利边缘造成的衍射会使光束轻微扩散。
Not this
Diffractions can be seen when light passes through a narrow slit.
Use this
Diffraction can be seen when light passes through a narrow slit.
diffraction 泛指衍射现象时为不可数名词，不用复数形式；单数形式即可表达‘能观察到衍射’这一普遍现象。
Not this
The refraction of light around a sharp edge produces fringes.
Use this
The diffraction of light around a sharp edge produces fringes.
refraction（折射）指光穿过不同介质时方向改变，而 diffraction（衍射）指光绕过障碍物或在狭缝边缘展开并产生明暗条纹；此处描述的是衍射，不能混用 refraction。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
X射线衍射
X-ray diffraction is used to determine the structure of crystals.
X射线衍射用于测定晶体的结构。
衍射光栅
A diffraction grating splits light into its component colors.
衍射光栅将光分解为其组成颜色。
衍射图案
The diffraction pattern appeared as alternating bright and dark bands.
衍射图案呈现明暗相间的条纹。
电子衍射
Electron diffraction reveals the arrangement of atoms in a material.
电子衍射揭示了材料中原子的排列。
单缝衍射
Single-slit diffraction produces a central bright band.
单缝衍射产生中央亮带。
中子衍射
Neutron diffraction helps scientists study magnetic structures.
中子衍射帮助科学家研究磁性结构。
Use diffractions naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆：diffraction像di+fraction（分数），光被狭缝“分成”明暗相间的条纹，即衍射。
语域：formal 常见场景：物理教材、学术论文、科普讲解 这是物理/光学领域的专业术语，通常用于教材、学术论文或科普讲解等正式场合，多出现在科学讨论中；日常口语里很少使用。
这些词都以 /ækʃən/ 收尾，与 diffraction 押韵。注意 fiction /ˈfɪkʃən/ 拼写相似，但元音为 /ɪ/，与 diffraction 不押韵；拼写相近并不等于发音相同。
Dictionary facts from ECDICT, WIKTIONARY.