54~46 ka川东北石笋的氧同位素记录及其气候环境意义探讨
54~46 ka천동북석순적양동위소기록급기기후배경의의탐토
δ18O variation during 54- 46 ka recorded by a stalagmite from Northeast Sichuan, Central China and its relationship with summer monsoon evolution
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