生物年代地层的...

biochronostratigraphic的音标：biochronostratigraphic的英式发音音标为：[baɪɒkrɒnɒst'ræti:ɡrɑ:f]biochronostratigraphic的美式发音音标为：[baɪɒkrɒnɒst'rætiɡrɑf]...