a tic gases display a regular change during their ascent towards the surface in the Te ngchong Rehai area. There are various reasons for causing these changes. From th e deep\|seated to the shallow, the variations in the He concentration of escaped
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李志群,任治,张泰身.1999.云南腾冲火山旅游景观探讨[J].地质论评,45(7):940-945,[DOI]. Li Zhiqun, Ren Zhiji, Zhang Taishen.1999. Primary Study on Volcanic Landscapes in Tengchong, Yunnan Province[J]. Geological Review,45(7):940-945.
