The results showed that the primary xylem of the root is diarch, triarch and tetrarchy;
结果表明：根的
质部为二原
、三原和四原；
的;二原的The results showed that the primary xylem of the root is diarch, triarch and tetrarchy;
结果表明：根的质部为二原、三原和四原；
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成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
