This paper describe the phase analysis to subaqueous sediment middle reachesof Tumen River,and pretiminary exploraory to the cause of its formation.是什么意思_This paper describe the phase analysis to subaqueous sediment middle reachesof Tumen River,and pretiminary exploraory to the cause of its formation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句