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| 81. | vertically fired pit |
| 垂直供热的均热炉 |
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| 82. | shallow manure pit |
| 浅粪坑 |
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| 83. | river crossing pit |
| 河流穿越坑 |
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| 84. | crossfield pit pair |
| 交叉场纹孔对 |
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| 85. | rhinarium sensory pit |
| 嗅觉陷 |
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| 86. | open pit survey |
| 露天矿井测量 |
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| 87. | cyclone cellar [ pit ] |
| [美](草原地带的)旋风避难穴;逃避处 |
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| 88. | pit level indicator |
| 池液面指示器 |
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| 89. | open pit quarry |
| 露天矿场 |
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| 90. | contaminated mud pit |
| 污泥卸置坑 |
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