| chromium plating | 镀铬 | |
| chromoscope | 彩色显象管 | |
| chromosome complex | 染色体群 | |
| chronograph | 记时器 | |
| chronometer | 精确记时计 | |
| chronopher | 电控报时器 | |
| chronopotentiogram | 测时电位图 | |
| chronopotentiometry | 计时电位测量法 | |
| chronoscope | 计时表 | |
| chuck | 卡盘 | |
| cie color system | cie颜色系 | |
| cie system of color representation | cie颜色系 | |
| cigfet | 互补隔离栅场效应晶体管 | |
| cil | 电流注入逻辑 | |
| cipher | 密码 | |
| cipher mask | 数码消隐 | |
| ciphering | 译成密码 | |
| ciphony | 密码电话 | |
| circle | 圆 | |
| circle diagram | 圆图 | |
| circuit | 电路 | |
| circuit No. | 回路编号 | |
| circuit adjustment | 电路调节 | |
| circuit analysis | 电路分析 | |
| circuit analyzer | 电路分析器 | |
| circuit breaker | 断路器自动断路器 | |
| circuit breaker fail protection system | 断路器失灵保护系统 | |
| circuit check | 电路检验 | |
| circuit closing connection | 闭路接法 | |
| circuit closing device | 接通装置 | |
| circuit commutated turn off time | 电路转换断开时间 | |
| circuit component | 电路元件 | |
| circuit constant | 电路常数 | |
| circuit density | 电路装配密度 | |
| circuit design | 电路设计 | |
| circuit diagram | 电路图 | |
| circuit element | 电路元件,线路元件 | |
| circuit engineering | 电路技术 | |
| circuit for closing valve | 关(闭)阀回路 | |
| circuit for opening meter | 开度计回路 | |
| circuit for opening valve | 开阀回路 | |
| circuit functional checkout | 电路功能检查 | |
| circuit interconnect pattern | 电路互连图案 | |
| circuit layout | 电路布置图 | |
| circuit length | 电路长度 | |
| circuit opening connection | 开路接法 | |
| circuit opening contact | 开路接点 | |
| circuit orbit | 圆形轨道 | |
| circuit polarizer | 圆偏振器 | |
| circuit requirements | 电路技术条件 | |
| circuit simulation | 电路模拟 | |
| circuit switching | 通道转换 | |
| circuit technique | 电路技术 | |
| circuit tester | 电路试验器 | |
| circuit theory | 电路理论 | |
| circuit to starting device | 主启动设备回路 | |
| circuit with distributed constants | 分布常数电路 | |
| circuitron | 双面印刷电路 | |
| circuitry | 电路图 | |
| circular | 圆形的,园的,环形的,循环的 | |
| circular antenna | 圆形天线 | |
| circular arc | 圆弧 | |
| circular arc profile | 圆弧叶型 | |
| circular brick | (改进型气冷堆)圆形砖 | |
| circular buffering | 循环缓冲 | |
| circular burner | 圆形燃烧器 | |
| circular cap | 圆形泡罩 | |
| circular catwalk | 环形过道 | |
| circular cavity | 圆形空腔谐振器 | |
| circular cell | 圆形[热]室 | |
| circular chart | 圆形记录纸 | |
| circular coil | 圆形天线 | |
| circular counter | 表盘式计数器 | |
| circular crab runway girder | 环形吊车道梁 | |
| circular crack | 环形裂缝,环状裂纹 | |
| circular crane | 旋转式吊车,环形吊车 | |
| circular cross section | 圆形截面 | |
| circular current | 环[电]流 | |
| circular cylindrical coordinates | 圆柱坐标 | |
| circular cylindrical shell | 圆柱形壳体,圆柱筒壳 | |
| circular cylindrical void | 环状圆柱形空隙 | |
| circular degree | 圆度 | |
| circular diagram | 圆图 | |
| circular disk crack | 圆饼状裂纹 | |
| circular distributor ring | 集电环,配电环,环形整流子 | |
| circular duct | 圆形风管 | |
| circular electric wave | 圆电波,横电波 | |
| circular equivalent of rectangular duct | 矩形风管的圆形当量 | |
| circular error probability | 循环误差概率 | |
| circular field | 旋转磁场,园磁场 | |
| circular fins | 环形的肋片 | |
| circular flow | 圆流,环流,环形流动 | |
| circular flue | 圆形火筒(炉胆) | |
| circular frequency | 角频率,圆频率 | |
| circular function | 圆函数,三角函数 | |
| circular galvanometer | 圆形检流计 | |
| circular grained graphite | 圆晶粒石墨 | |
| circular grate | 环形旋转炉排 | |
| circular guide | 圆导轨 | |
| circular measure | 弧度法 |

