双曲抛物面

shuāng qū pāo wù miàn

(geometry) hyperbolic paraboloid

双

shuāng

two

曲

qū

variant of 麴|曲[qu1]

抛

pāo

to throw

物

wù

(bound form) thing

面

miàn

variant of 麵|面[mian4]