unretentive

adj.

无保持（力）的，无保留（力）的；

Heuristic Models for Material Discharge from Landscapes with Riparian Buffers
Crowns and other extra-coronal restorations: preparations for full veneer crowns
Tooth spaces in and prosthetic treatment received by the middle-aged and the elderly in Hong Kong
Bonded amalgam restorations: a comparative study of glass-ionomer and resin adhesives.
Structural chronology, oroclinal deformation, and tectonic evolution of the southeastern Klamath Mountains, California
Pain and denture condition in edentulous orodyskinesia: comparisons with tardive dyskinesia and control subjects.
Enamel bonding plastic materials in modifying the form of abutment teeth for the better functioning of partial prostheses
Zygomatic fixtures--the Sydney experience
Highly Efficient and Ultra-small Volume Separation by Pressure-Driven Liquid Chromatography in Extended Nanochannels
Device for performing safety functions in areas with high frequency radiation