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61. | sintered glass filtering crucible |
| 烧结玻璃过滤坩埚 |
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62. | the crux of a problem |
| 问题的核心 |
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63. | Where does the crux lie? |
| 关键在哪里? |
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64. | bushing feed hole |
| 坩埚加球孔 |
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65. | duplex crucible technique |
| 双套坩埚法 |
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66. | oscillating-crucible viscometer |
| 振动坩埚式粘度计 |
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67. | alundum crucible |
| 钢铝石坩埚 |
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68. | cold-mo(u)ld arc melting |
| 水冷坩埚电弧熔炼 |
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69. | non-crucible zone melting furnace |
| 无坩埚区熔炉 |
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70. | Morgan crucible furnace |
| 摩尔根坩埚式电炉 |
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