Xihu Trough is located at the east - northem East China Sea shelf basin, and Pinghu Forma tion (Eocene) is the key target in the basin.是什么意思_Xihu Trough is located at the east - northem East China Sea shelf basin, and Pinghu Forma tion (Eocene) is the key target in the basin.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句