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back geared upright drill press：背齿轮立式钻床

back-geared ==> 后齿轮的 | back-geared upright drill press ==> 背齿轮立式钻床 | back-hand drainage ==> 倒转水系

back tool rest：后刀架

back to face ==> 反面对反面相叠 | back tool rest ==> 后刀架 | back trace technique ==> 向后追踪技术,回溯技术

tool back plane：切深剖面

tool back clearance ==> 刀具纵向后角 | tool back plane ==> 切深剖面 | tool back rake ==> 刀具纵向前角

back taper tap：倒锥丝锥,机用丝锥

back taper ==> 倒锥 | back taper tap ==> 倒锥丝锥,机用丝锥 | back tax ==> 退缴税

Back swing：上杆, 后挥杆

Back spin 下旋球(後旋球) | Back Swing 上杆, 后挥杆 | Back Tee 发球区(职业男选手比赛时), 后方球座

Back swing：回程

back substitution 回代 | back swing 回程 | back thrusting 背向冲断层作用

back strap joint：贴板接合

back stitch 扣针脚 | back strap joint 贴板接合 | back strap 对接贴板

back reinfored knife saw：夹背刀锯

back reflection || 背(反)射 | back reinfored knife saw || 夹背刀锯 | back release || 快门按钮

back reinforced knife saw：夹背刀锯

back reflection X-ray camera ==> 背面反射X射线照相机 | back reinforced knife saw ==> 夹背刀锯 | back rent ==> 欠租

back ripple current：逆向脉动电流

back panel 背板 | back ripple current 逆向脉动电流 | back, loop 回环

French Fifth Republic：法蘭西第五共和

Freight rate 运费率 | French Fifth Republic 法兰西第五共和 | Frequency 次数;频率

cartographic communication：地图传输 地図通信

■ cartographic analysis 地图分析 地図分析 | ■ cartographic communication 地图传输 地図通信 | ■ cartographic data 制图数据 地図データ