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| 81. | Standard for the equipment of ventilative safety of colliery |
| 矿井通风安全装备标准 |
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| 82. | is concluded that the engineering-geological problems and corresponding prevention measures from the shaft |
| 提出在矿井设计与施工中应特别重视工程地质问题及井筒治理的对策。 |
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| 83. | Foul or poisonous gas that sometimes pollutes the air in coal mines. |
| 矿井瓦斯，有毒气体矿井中有时污染空气的恶臭气体或有毒气体 |
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| 84. | mine static head |
| 矿井通风系统静压头 |
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| 85. | an air shaft; a ventilation shaft |
| 通风井 |
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| 86. | Finally the naked, bayonetted bodies were thrown into a deep mine-shaft, hand grenades chucked after |
| 最后，一丝不挂、刀伤累累的尸体被扔进一个深深的矿井，随后还扔进手榴弹试图将其炸塌。 |
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| 87. | Inspection machining dimension of propeller shaft( intermediate shaft or counter shaft). |
| 螺旋桨轴（间轴）加工尺寸检查。 |
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| 88. | Code for design of pit-bottom of coal mine |
| 煤矿矿井井底车场设计规范 |
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| 89. | According to the above information and combining with the development of coal seam underneath the mine shaft |
| 针对以上情况,结合矿井下组煤的开拓对矿井通风系统进行了改造与优化。 |
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| 90. | winch-type measurer for mine shafts |
| 矿井用绞车式测量器 |
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