The spermatogonia in the seminiferous tubules of testis are on four different stages, including primary spermatocytes, secondary spermatocytes, spermatoon, and spermatozoa.
生精小管内有处于
育时期的精原细
，初级精母细，次级精母细，精子细和精子；
;
胎;的;;
的;;死;The spermatogonia in the seminiferous tubules of testis are on four different stages, including primary spermatocytes, secondary spermatocytes, spermatoon, and spermatozoa.
生精小管内有处于育时期的精原细，初级精母细，次级精母细，精子细和精子；
声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦
代表本软件的观点；若
现问题，欢迎向我们指正。
