The relationship between free oxide and soil development in south western district of China is also discussed in this paper.
为此，本文仅就西南红壤和黄壤中氧化物及游离氧化物进行了初步探讨。
Lithium cobalt oxide accounts for 30% of the cost of a lithium-ion battery. Air, however, is free.
锂钴氧化物的成本占到锂离子电池的30%，而空气却是免费的。
The technology should result in cheaper batteries since this process is free and the carbon component is less expensive than the lithium cobalt oxide used in lithium-ion batteries.
该技术应导致更便宜的电池，因为这个过程空气是免费的，而且碳“成本”是低于锂钴氧化物中使用的锂离子电池。
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