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51. | automatic hatch cover |
| 自动舱盖 |
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52. | Per Workable Hatch |
| 按可作业的舱口 |
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53. | center-gauge hatch |
| 中央量油口 |
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54. | large hatch ship |
| 大舱口船 |
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55. | cargo dynamic hatch |
| 自动舱口盖 |
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56. | after hatch=afterhatch |
| 后舱口 |
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57. | hydraulic hatch pump |
| 液压舱盖泵 |
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58. | tank gage hatch |
| 油罐量油孔 |
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59. | electrohydraulic hatch cover |
| 电动液压舱口盖 |
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60. | hatch - slack pathway |
| 哈斯二氏途径 |
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