1. The streak-plate method was used to separate Chlorella colonies.The selected strain, induced by mutation using a laser, was cultured heterotrophically to obtain a high biomass.
   用小球藻干粉培养草履虫和萼花臂尾轮虫,减低了水体中细菌的种类和数量，达到大量稳定培养轮虫的目的。

声明：以上例句、词性分类均由互联网资源自动生成，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。