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| 71. | a rare price |
| 难得的价格 |
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| 72. | rare earth phosphor |
| 稀土类荧光粉 |
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| 73. | rare earth screen |
| 稀土屏 |
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| 74. | light rare metal |
| 轻稀有金属 |
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| 75. | rare element chemistry |
| 稀有元素化学 |
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| 76. | rare stable isotope |
| 稀有稳定同位素 |
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| 77. | rare metal metallurgy |
| 稀有金属冶金学 |
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| 78. | light rare earths |
| 轻稀土 |
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| 79. | rare precious metal |
| 稀有贵金属 |
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| 80. | rare earth cobaltmagnet |
| 稀土钴磁钢 |
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