|
|
| 71. | back-up bearing |
| 支承轴承 |
|
|
| | |
| 72. | back-up galvanometer |
| 辅助检流计 |
|
|
| | |
| 73. | "Back up, son ! " |
| 振作起来,孩子! |
|
|
| | |
| 74. | back-up satellite |
| 后援接替卫星; 备用卫星 |
|
|
| | |
| 75. | archival back-up |
| 归档备份 |
|
|
| | |
| 76. | analogue back-up |
| 模拟备份 |
|
|
| | |
| 77. | back up oscillator |
| 后备振荡器 |
|
|
| | |
| 78. | back up information |
| 后备信息 |
|
|
| | |
| 79. | digital back-up |
| 数字备用设备 |
|
|
| | |
| 80. | back-up surveillance |
| 辅助监督 |
|
|
| | |