リーマン面 だったら
riimammendattara
1. If Riemann surface; When Riemann surface
Noun
#2158374
1. If Riemann surface; When Riemann surface
1. face
2. surface
3. mask (esp. a noh or kyogen mask)
1. if it's the case
1. cotton plant (Gossypium spp.)
2. batting; wadding
1. they; those guys
1. ramen; Chinese-style noodles — explanation