n.the lower side of anything
同义词：bottomunderside
Computer attachable to an undersurface of a desk
Security container for mounting to an undersurface
Postauricular undersurface tympanic membrane grafting: A follow‐up report
Tibial insert undersurface as a contributing source of polyethylene wear debris.
Undersurface tear of the ulnar collateral ligament in baseball players. A newly recognized lesion
Contact geometry at the undersurface of the acromion with and without a rotator cuff tear * **
Security box assembly adapted to be mounted beneath an undersurface
Tympanic membrane grafting with fascia: Overlay vs. undersurface technique
MR arthrography of partial thickness tears of the undersurface of the rotator cuff: an arthroscopic correlation.
Backscattered electron imaging of the undersurface of resin‐embedded cells by field‐emission scanning electron microscopy
