系统软件 操作系统 释文 background mode 后台模式
- Fria
- friability
- friable Sands
- friable sands
- friar
- fricative
- Fricke
- Fricke dosimeter
- Fricsay Ferenc
- frictiograph
- friction
- frictional angle
- frictional coefficient
- frictional force
- frictional force microscopy
- frictional lichnoid eruptions
- frictional pressure drop
- frictional pressure drop in two-phase flow
- frictional properties of fiber
- frictional sliding
- frictional soil
- frictional test in plastic forming
- friction and wear properties of ceramics
- friction behavior
- friction braking