back and front pitch of a winding  绕组的前后节距

cropping of front and back ends  切头切尾

front and back engine  前、后发动机

front and back shooting methods  正、反起爆法

front and back wall cross collocation  前后墙对冲布置

front and back wall fired burner  前后墙布置燃烧器

the front and back doors  前后门

the front and back position  前后位置

a way of water as solvent and coated material  水基成膜法

back-coated mirror  背面敷层镜

cemented and coated type slow or controlled releasing urea  包膜型缓/控释尿素

Felted and coated fertilizer  胶结包膜肥料

felted and coated materials  胶结包膜材料

film-coated and slow release fertilizer  包膜缓释肥

Prepainted Hot-Dip Aluminum-Coated and Zinc-Coated  彩涂镀铝锌板

air mass and front analysis  气团及锋面分析

distance between jaw and front end of towing vehicle  半挂车间隙半径; 牵引叉销至车辆前端的距离

distance between towing device and front end of towing vehicle  牵引叉销至车辆前端的距离; 牵引装置至车辆前端的距离

fear the wolf in front and the tiger behind  前怕狼,后怕虎