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81. | packing gland nut |
| 盘根压盖帽 |
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82. | castle circular nut |
| 六角圆顶螺母 |
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83. | high strength nut |
| 高强度螺帽 |
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84. | nut cold former |
| 螺母冷锻机 |
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85. | hexagonal brass nut |
| 铜六角螺母 |
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86. | peanut | longevity nut |
| 落花生| 长生果 |
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87. | hexagonal socket nut |
| 内六角螺母 |
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88. | packing nut wrench |
| 填密螺母扳手 |
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89. | ball bearing nut |
| 滚珠轴承螺母 |
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90. | nut forming dies |
| 螺帽模 |
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