babylonian quartz
塔状石英
热门单词
- back clearance
- back clevice
- back cloth
- backcloth
- back coat
- back-coated mirror
- back coating
- back cock
- back coil
- backcomb
- back conductance
- back conductance ratio
- back cone
- back cone angle
- back cone distance
- back cone tooth profile
- back-connected fuse
- back connecting rod
- back connection
- back connection type instrument
- back contact
