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| 51. | bobbin fuse cutout |
| 圆管保险丝 |
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| 52. | bobbin dyeing apparatus |
| 筒子纱染色装置 |
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| 53. | bobbin of embroidery |
| 刺绣梭子 |
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| 54. | flanged bobbin machine |
| 有边筒子卷机 |
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| 55. | bobbin spinning machine |
| 筒管纺丝机 |
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| 56. | porcelain bobbin insulator |
| 瓷绕线管绝缘子 |
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| 57. | draw-twist bobbin |
| 拉伸加捻筒管 |
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| 58. | elastic expandable bobbin |
| 弹性伸缩筒管 |
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| 59. | circumference of bobbin |
| 筒子周 |
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| 60. | automatic bobbin changer |
| 自动筒管更换器 |
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