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61. | incomplete block |
| 不完全区组 |
|
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| |
62. | downfaulted block |
| 断位陷落地块 |
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| |
63. | block signalman |
| 闭塞信号员 |
|
|
| |
64. | alternate block |
| 交变部件 |
|
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| |
65. | encompassing block |
| 包括分程序 |
|
|
| |
66. | fundamental block |
| 基本块 |
|
|
| |
67. | exploring block |
| 探测部件 |
|
|
| |
68. | isotactic block |
| 等规嵌段 |
|
|
| |
69. | electrooptic block |
| 电光部件 |
|
|
| |
70. | downthrow block |
| 下落断块 |
|
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| |