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| 11. | dispersion hardened alloy |
| 弥散硬化合金 |
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| 12. | hardened coupling |
| 淬硬接头 |
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| 13. | hardened and tempered |
| 淬火与回火的 |
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| 14. | case-hardened steel |
| 表面硬化钢 |
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| 15. | hardened in air |
| 在空气中硬化的;气硬的 |
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| 16. | air hardened qualit |
| 气硬性质 |
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| 17. | hardened layer wood |
| 硬化层积材 |
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| 18. | quench hardened case |
| 淬火层 |
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| 19. | hardened steel bushing |
| 淬硬钢衬套 |
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| 20. | full-hardened steel |
| 全淬硬钢 |
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