Some CO gas remains in the ingot, and eventually blow holes are formed in the steel.

部分一氧化碳气体残留在钢锭内部，最终在钢中形成气泡。

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The reduction experiments were carried out using hydrogen and CO gas to treat the iron ore with different sizes, 0.

实验中采用氢气与CO两种还原性气体分别对不同粒径的铁矿粉进行还原实验，粒度分别为0。

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Experiments of standard test fires show that this method can realized for the compound measurement of smoke particles and co gas.

基于标准火的实验证明该方法可以实现烟雾颗粒和co气体的复合测量。

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The report also cited the strong quarterly dividend history at Piedmont Natural Gas Co.

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Co-branded gas cards will offer cash back on gas purchases once you spend a certain amount.

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The report also cited the strong quarterly dividend history at Delta Natural Gas Co.

FORBES: DGAS's Strong Dividend History Helps Get It To The Top 10