firs[计] 先前的
firn.枞树;冷杉;枞木
fir services levy火灾服务税
Firing evaluation射击评价
fir essential oil冷杉精油
firing resistance耐燃性能
firing table data标定诸元
firing optimizing火力优化
Firing controller点火控制器
firing efficiency射击效率
firing simulation射击仿真
Firing technology点火技术