xì bāo / shēng wù xué / yán jiū / zhōng / , / jīng cháng / xū yào / guān chá / biān máo / de / sān lián guǎn / jié gòu / 。细胞生物学研究中,经常需要观察鞭毛的三联管结构。In cell biology research, it is often necessary to observe the microtubule triplet structure of flagella.