From Yongping, the trail winds its way down to Tengchong and beyond in the far southwest of China.
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from yongping
从永平
以上为机器翻译结果，长、整句建议使用 人工翻译 。
A review is made of the practice of technical transformation of copper sulfur flotation technology from bulk flotation into stage selective flotation and then iso flotation in Yongping copper Mine.
对永平铜矿铜硫浮选工艺从混合浮选变为分步优先浮选，再变为等可浮工艺的改造实践进行了评述。
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