file name extension

• 文件名扩展部分

英英释义

Noun:

1. a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename;

   "most applications provide extensions for the files they create"
   "most BASIC files use the filename extension .BAS"
   

近反义词

【近义词】

• filename extension 文件扩展名
• extension 延长