Freu弗勒
FRabbr.故障率(=failure rate)abbr.故障记录(=faillure record)abbr.故障报告(=failure report)
frustrating time令人感到挫折的时刻
fructus galangae[医] 红豆蔻
Fresnel equation菲涅耳方程
freon compressor氟立昂压缩机
fructus cannabis火麻仁
fructus catalpae梓实
frecision timing精确计时
fructus ailanthi臭椿籽
Frenzel's method
Freiberg disease佛莱贝格病