| ball screw assembly | 滚珠丝杠副 | |
| ball valve | 球阀 | |
| ball-clevis | 球头挂板,由脚球与双片或单片挂板所构成的一种连接件 | |
| ball-hook | 球头挂钩 | |
| ballast | 稳定器 | |
| ballast leakage | 镇流漏电 | |
| ballast leakage resistance | 镇流漏泄电阻 | |
| ballast resistance | 平稳电阻 | |
| ballistic galvanometer | 冲击电流计 | |
| ballistic galvanometer constant | 冲击电流计常数 | |
| ballistic method | 冲击法 | |
| balzed grating | 闪耀光栅 | |
| band | 带,频带,箍(gū),波段,范围,围带,域,光带,区域 | |
| band adjustment | 区域调节 | |
| band brake | 带闸 | |
| band coupling | 带状联轴器 | |
| band electrode | 带极 | |
| band elimination filter | 带阻滤波器 | |
| band fuse | 片形保险丝 | |
| band gap voltage reference | 带隙电压参考 | |
| band limiting | 频带限制 | |
| band model | 能带模型 | |
| band of frequencies | 频率带 | |
| band origin | 谱带基线 | |
| band overlap | 能带重叠 | |
| band rejection filter | 带阻滤波器 | |
| band spread | 频带展宽,波段展开,频带扩展 | |
| band stop filter | 带阻滤波器 | |
| band switch | 波段转换开关 | |
| band theory | 能带理论 | |
| band to band transition | 带间跃迁 | |
| band transformer | 波带变压器 | |
| band width | 频带宽度 | |
| band width of video amplifier | 视频放大器频宽 | |
| band-limited frequency spectrum | 限带频谱 | |
| band-pass | 带通,通频带 | |
| band-pass filter | 带通滤波器 | |
| band-pass transformer | 带通变压器 | |
| band-suppression filter | 带阻滤波器 | |
| banding insulation | 绑扎绝缘 | |
| bandwidth | 带宽 | |
| bandwidth control | 带宽控制 | |
| bang bang controller | 继电器式控制器 | |
| bang bang servo | 开关伺服系统 | |
| bank of resistors | 电阻组 | |
| bank winding | 迭绕线圈 | |
| bar armature | 条线圈电枢 | |
| bar electromagnet | 条形电磁铁 | |
| bar graph generator | 彩条信号发生器 | |
| bar insulation | 条绝缘 | |
| bar photometer | 条形光度计 | |
| bar primary bushing type current transformer | 棒形电流互感器 | |
| bar type transformer | 条形铁心变流 | |
| bar winding | 条形绕法 | |
| bar wound machine | 条绕电机 | |
| bar-and-dot generator | 点划发生器 | |
| bare conductor | 裸线 | |
| bare electrode | 裸极 | |
| bare motor | 无配件电动机 | |
| bare wire | 裸线 | |
| barium | 钡 | |
| barkhausen kurz oscillations | 巴克好森库尔兹振荡 | |
| barn | 靶恩 | |
| barograph | 气压计,气压记录嚣 | |
| barometer | 气压表 | |
| barometer cistern | 气压表水银槽 | |
| barometric correction | 气压表器差修正 | |
| barometrograph | 空盒气压计 | |
| barothermograph | 气压温度计 | |
| barrel | 桶 | |
| barrel distortion | 桶形畸变,负畸变 | |
| barrel winding | 桶形绕法 | |
| barretter | 镇流电阻器 | |
| barrier complex | 障壁复合体 | |
| barrier frequency | 截止频率 | |
| barrier island complex | 障壁岛复合体 | |
| barrier layer capacitance | 阻挡层电容 | |
| barrier layer cell | 光电池 | |
| barring motor | 盘车电动机 | |
| base | 基底,灯座 | |
| base address register | 基址寄存器 | |
| base bias | 基极偏压 | |
| base electrode | 基极 | |
| base exchange complex | 盐基交换复合体 | |
| base insulator | 支座绝缘子 | |
| base line | 基线 | |
| base load generator | 基底负载发电机 | |
| base map | 工作草图 | |
| base metal | 母体金属 | |
| base metal thermocouple | 基金属热电偶 | |
| base peak | 基峰 | |
| base plate | 底座板 | |
| base region | 基极区 | |
| base register | 基址寄存器 | |
| base resistance | 基级电阻 | |
| base terminal | 基极引出端 | |
| base unit(of measurement) | 基本(测量)单位 | |
| base-load | 基本负荷,基底负荷 | |
| base-load capacity | 基荷容量 | |
| base-load control | 基荷控制 |

