Unascertained normal subgroup is also studied.
并且研究了未确知正规子群。
The natural disaster in coal mine involves many unascertained factors.
矿井自然灾害的安全预评价涉及不确定因素众多。
On this basis, an unascertained model of air quality simulation is established.
在此基础上，应建立未确知空气质量模拟模型。
In the paper, I Study mathematical treatment method of unascertained information.
本文研究未确知信息的数学处理方法。
On this basis, an unascertained model of water quality simulation is established.
在此基础上，建立未确知水质模拟模型。
On this basis, an unascertained model of water quality simulation is established.
在此基础上，建立未确知水质模拟模型。
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