直接google出来的，看看是不是你要的结果：
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File Type 1 Audition Loop (Most common)
Popularity Average
Category Audio Files
File Description Audio loops file used by Adobe Audition; an MP3 file modified to be suitable for looping
Program(s) that open cel files Windows Adobe Audition
File Type 2 MicroStation Cell Library
Popularity Average
Category Image Files
File Description Contains objects, symbols, or details used in drawings created by MicroStation CAD software
Program(s) that open cel files Windows Bentley Systems MicroStation
Cimmetry Systems AutoVue
楼主
