The properties of Yun Long refractory silver-copper ore are summarized. The feasibility as well as the pilot test result of the acid leaching-sulfide precipitation flotation process is demonstrated.

简述了云龙难选氧化银铜矿的性质，论证了酸浸—硫化沉淀浮选工艺的可能性及工业试验结果。

youdao

While their long-term effectiveness is unclear, Yun and Lee believe these also will spur the body's trauma response.

FORBES: Rethinking Biology

He is a maverick in a country whose financial institutions have long operated around hak-yeon, ji-yeon and hyul-yun (school, hometown and kinship ties) and government diktat on who to lend to and how much.

CNN: HERE COME THE MAVERICKS

The four-engine Yun-20, or Transport-20, is a huge, multi-function airfreighter that can perform various long distance air transport tasks targeting cargo and passengers, the state-run Xinhua News Agency said.

CNN: China's new super cargo jet takes to the skies