| ประโยคภาษาจีน : 中文句子 | 
|---|
|  huì彗  chà差  zhǔ yào主要  gēn跟  pāo wù miàn抛物面  fǎn shè反射  wàng yuǎn jìng望远镜  yǒu guān有关  yǐng xiǎng影响  zhóu轴  wài外  diǎn点  chéng xiàng成像  zài在  shì cháng视场  de的  biān yuán边缘  wǎng wǎng往往  gèng更  míng xiǎn明显 | 
| Coma -- associated mainly with parabolic reflector telescopes which affect the off-axis images and are more pronounced near the edges of the field of view. |