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| 41. | logical address plug |
| 逻辑地址插入 |
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| 42. | gravel retainer plug |
| 砾石承托塞 |
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| 43. | electric sparking plug |
| 电火花塞 |
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| 44. | filling oil plug |
| 注油堵 |
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| 45. | galvanized screw plug |
| 镀锌旋塞 |
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| 46. | close fitting plug |
| 闭合装置塞块 |
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| 47. | hand plug gauge |
| 手塞规 |
|
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| 48. | formation core plug |
| 地层岩心柱状样品 |
|
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| 49. | coaxial cable plug |
| 同轴电缆插头 |
|
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| 50. | mine survey plug |
| 矿山测量标桩 |
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