Abstract : it " s the first report that luocheng fm . diachronism in lower carboniferous series in huanjiang area of northern guangxi 文摘:广西环江下石炭统罗城组具穿时性在桂北地区罗城组有关资料报道中属首次。
2.
When transformation of parts of speech takes place , we should distinguish synchronism from diachronism , grammar from rhetoric anti fixity from temporariness 摘要转类，应当区分历时和共时、语法和修辞学、固定的和临时性的。
