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| 生产车间一角 A corner of the workshop |
生产车间一角 A corner of the workshop |
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| 大弯管生产车间一角 Acorner of big angel tube workshop |
中频弯管机 Intermediate frequency bent machine |
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| 弯管推制机 Bent machine |
热处理炉 Heat-treatment furnace |
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| 法兰锻制机 Flange forging machine |
法兰锻制机 Flange forging machine |
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