rostellum
n. [无脊椎] 顶突;[动] 小喙
复数 rostella
例句
Rudimentary rostellum was found obviously in 3 of 10 scolices of the worms from Duyun.
染色观察都匀牛带绦虫10个头节中有3个明显可见发育不良的顶突。
There were 4 suckers in C. pisiformis and the scolex of T. pisiformis, and 37 hooks in the rostellum arranging with inner and outer rings.
结果表明,豆状囊尾蚴和豆状带绦虫均有4个吸盘,37个小钩分内、外两圈排列在顶突上。