Carbon steel boiler, with less gas, generally use the basic open hearth steel i. e. the use of basic lining.
锅炉用碳素钢，夹杂气体较少，一般采用碱性平炉钢即使用碱性炉衬。
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If there's a silver lining to Solomon's findings, it's that she does not take into account the possibility of one day being able to remove carbon from the atmosphere.
The silver lining in this carbon-filled cloud is that executives at firms such as Gap are using technology to cut the number of trips they make in order to save money.