The life of double flow lance has reached 155 heats.

双流道氧枪的寿命已达到155炉。

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The double flow top blowing process is a new process developed by Shanghai Steel Works No. 3 and East China Institute of Metallurgy.

双流复合顶吹炼钢法是上钢三厂和华东冶金学院共同开拓的一种炼钢新工艺技术。

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Several technical features are associated to the new torch design such as an automatic electrode change, a double flow gas nozzle and a push pull wire feeder.

与该焊枪相关联的几个技术特征有：自动更换钨电极、双气流喷嘴和推拉丝送丝机构。

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This simple double entry book keeping shows that the net cash flow into the economy produced by government spending is zero, nada, nothing.

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For a major overhaul, consider installing photovoltaic cells on your roof, hydronic radiant heating in your floors, double-glazed panes in your windows and low-flow toilets in your bathroom.

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Second, our substantial operating cash flow, which we expect to grow in the double digits in 2009, gives us the financial flexibility to execute our plans.

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