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| 81. | air-tight wrapping |
| 密封包装 |
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| 82. | oil tight joint |
| 油密接头 |
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| 83. | tight gravel placement |
| 致密砾石充填 |
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| 84. | vapour tight tank |
| 不漏气罐 |
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| 85. | tight ion source |
| 封闭式离子源 |
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| 86. | tight-jacketed cable |
| 紧包护套光缆 |
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| 87. | tight joint set |
| 闭合节理组 |
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| 88. | Money is tight. |
| 头寸紧。 |
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| 89. | tight metal container |
| 紧闭金属容器|紧闭金属集装箱 |
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| 90. | dust tight construction |
| 防尘构造 |
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