| 序号 | 英文 | 音标 | 词性 | 中文 |
| | back mixing | | | 反混(管式或塔式反应器中轴向混合) |
| | back money | | | 拖欠款, 过期未付款 |
| | back noise | | | 本底[背景]噪声 |
| | back number | | n. | <美>过期刊物,<口>过时(或老式)的人(或物),老古董 |
| | back of | | | 在...后边 |
| | back off | | v. | 后退 |
| | back office force | | | 内勤人员 |
| | back on | | v. | 背靠 |
| | back on to | | | 背对着 |
| | back order | | | 延期交货 |
| | back order memorandum | | | 延期交货通知单 |
| | back oscillation | | | (雷达)射速回程 |
| | back out | | v. | 收回, 停止不干 |
| | back outlet return bend | | | 后孔U型接头 |
| | back pack | | | 背包 |
| | back pages | | | 左页, 偶数页 |
| | back panel | | | 后[反]面板, 背板 |
| | back pass | | | 后传, 背传 |
| | back passage | | n. | 直肠 |
| | back pay | | n. | 欠薪 |
| | back payment | | | 逾期支付 |
| | back pitch | | | 背景距, 反螺旋, 后列铆钉间距 |
| | back plan | | | 底视图 |
| | back plate | | | 支承板 |
| | back play | | | 空隙 |
| | back poppet | | | 后顶针座, 后随转尾座 |
| | back porch | | | 后沿 |
| | back porch interval | | | 消隐脉冲后肩持续时间 |
| | back porch of pedestal | | | (同步脉冲后面)熄灭脉冲后沿 |
| | back porch sample pulse | | | 后肩取样脉冲 |
| | back porch tilt | | | 后肩倾斜, 后沿倾斜 |
| | back pork | | | 脊背肉, 通脊肉(在脊椎骨底下, 为两长条形瘦肉) |
| | back pouring | | | 补浇 注 |
| | back pressure evaporator | | | 背压式蒸发器 |
| | back priming | | | 背里底漆涂装 |
| | back profile | | | 后侧面肖像(后脑在前, 脸的大部分被额和颊挡住) |
| | back projection | | | 背景放映(利用银幕做背景进行合成) |
| | back projector | | | 背景放映机 |
| | back pull | | | 后拉力, 后张力 |
| | back radiation | | | 反向辐射 |
| | back rake | | | 后倾角 |
| | back rake angle | | | (车刀的)纵向前角 |
| | back reaction | | | 逆反应 |
| | back reflection | | | 背(反)射 |
| | back reinfored knife saw | | | 夹背刀锯 |
| | back release | | | 快门按钮 |
| | back rent | | | 欠租, 过期未付的房租 |
| | back resistance | | | 反向电阻 |
| | back resistance meter | | | 反向电阻测量计 |
| | back rest | | | 固定中心架 |
| | back rind | | | 开模缩裂 |
| | back roll | | | 后滚筒 |
| | back room | | n. | 密室, 里屋 |
| | back room boy | | | 秘密工作人员(尤指：<美>暗中做交易的政客,<英>为政府或某团体在科学,经济,政治方面从事研究的人员) |
| | back rooms | | | 商店的辅助库房 |
| | back salary | | | 欠薪 |
| | back saw | | | 镶边手锯 |
| | back saw blade | | | 锯条 |
| | back scatter beta gauge | | | 反射型(β射线)测厚计 |
| | back scattering | | | 反向散射(散射角大于90°的折射) |
| | back scattering correction | | | 反向散射校正 |
| | back scattering factor | | | 反向散射因数 |
| | back scissors | | | 反交叉 |
| | back screen | | | [律]后掩护 |
| | back seat | | | 后座 |
| | back set | | | 逆水 |
| | back shift | | | 二次变换 |
| | back shooting | | | 逆向爆射 |
| | back shop | | | 大修工厂 |
| | back shunt | | | [采矿]矿车自动折返装置 |
| | back side | | | 背面, 反面 |
| | back side guard | | | 轧机出口侧的推床导板 |
| | back sight leaf | | | 表尺板 |
| | back signal | | | 回应[回原]信号 |
| | back slab | | | 悬臂板 |
| | back slang | | n. | 倒读隐语 |
| | back slope | | | 后坡 |
| | back space | | | 退位, (打字机)退格, 返回 |
| | back space key | | | 凿孔条倒退键 |
| | back spacing time | | | (录音机)倒带时间 |
| | back spectacle | | | 背光遮板 |
| | back speed | | | 退速 |
| | back spotfacing machine | | | 背锪孔钻床 |
| | back spread | | | 赚取差价的证券交易 |
| | back stagger | | | 后向斜罩 |
| | back stairs | | n. | 后楼梯, 诡秘之手段或方法 |
| | back stamp | | | 底印, 商标印 |
| | back stay | | | (蒸汽机车锅炉)背撑 |
| | back steam | | | 回汽 |
| | back stick | | | 棍背击球 |
| | back stop | | | 逆行停止, 定位簧, 定位杆 |
| | back stoping | | | 上向回采法 |
| | back stopper | | | 后退定程挡块 |
| | back straddle | | | 向后分腿跳 |
| | back straight | | | 非终点直道 |
| | back strap | | | 背垫条, 衬垫, 垫里, 垫座 |
| | back street | | n. | 小街 |
| | back stress | | | 背应力 |
| | back stretch | | | 非终点直道 |
| | back stroke | | | 返回行[冲]程, 逆行程 |
| | back substitution | | | 回代, 倒转代换 |