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| 轴承的下轴瓦装在连杆盖中 | |||
| 黄铜下轴瓦 | |||
| 下轴瓦 | |||
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| 软低锌黄铜; 下轴瓦 | |||
| 下半轴瓦 | |||
| 低锌黄铜 (80Cu, 20Zn) | |||
| 红色黄铜 | |||
| 下半轴瓦; 软黄铜; 低锌黄铜 | |||
| lower brass: 6 phrases in 3 subjects |
| Construction | 1 |
| Metallurgy | 2 |
| Technology | 3 |
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