针对我国多水平开采矿井的实际情况，建立了具有两级缓冲仓柔性连接运输系统可靠性的计算机模拟模型。
In view of real situations in multi level underground mines, a computer simulation model of reliability of mining haulage system with two ore bins has been established.
到目前为止，油气开采企业的支出水平虽有所回落，但它们仍在按照一年前制定的预算来投入资金，而一年前的油价要高的多。
So far oil and gas exploration companies, while cutting back somewhat, have continued to spend based on budgets set a year ago when oil prices were much higher.
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