three-neck flask 三颈烧瓶

long-neck flask 长颈烧瓶

micro narrow neck flask 微量三角烧瓶

side neck flask 支管烧瓶

wide neck flask 广口烧瓶

narrow neck flask 三角烧瓶

round-bottomed flask with long neck 长颈圆底烧瓶

flask neck 烧瓶颈

two-neck distilling flask 双颈蒸馏瓶

long neck round bottom flask 长颈圆底烧瓶