锥形底

1.taperedbottom  2.conical(hoppered)bottom  

锥形的英语翻译：

taper
【机】 cone; conical

底的英语翻译：

a copy kept as a record; base; bottom; end; fundus; the truth of a matter
【医】 base; basement; bases; basi-; basio-; basis; batho-; bathy-; fimdi
floor; fundus; pavimentum; solum