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51. | Crossing maneuver |
| 交叉穿越运行 |
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52. | submarine line crossing |
| 水下管线穿越 |
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53. | bow crossing range |
| 穿越船首距离 |
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54. | transition radiation detector |
| 穿越辐射探测器 |
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55. | crossing a traffic lane |
| 穿越分隔航道 |
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56. | Left turn crossing |
| 左转交叉穿越 |
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57. | bow crossing time |
| 穿越船首时间 |
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58. | Cross Harbour Tunnel |
| 穿越港湾隧道 |
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59. | river crossing pit |
| 河流穿越坑 |
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60. | directionally drilled crossing |
| 定向钻孔穿越 |
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