hard-shell

adj.

硬皮的，顽固的；

HARD SHELL
Hard Shell
Effects of temperature on calcium deposition in the hard-shell clam, Mercenaria mercenaria
Bubble generation and venous air filtration by hard-shell venous reservoirs: a comparative study.
Studies on the Hard-Shell Clam, Venus mercenaria, in British Waters. II. Seasonal Cycle in Condition and Biochemical Composition
Hard-shell cardiotomy reservoir for reinfusion of shed mediastinal blood
Protistan parasite QPX of hard-shell clam Mercenaria mercenaria is a member of Labyrinthulomycota
PRE-FORMED HARD-SHELL ATTACHMENT DEVICES FOR DENTAL APPLIANCES
Studies on the Hard-Shell Clam, Venus mercenaria, in British Waters. III. Further Observations on the Seasonal Biochemical Cycle and...
Emboli generation by the Medtronic Maxima hard-shell adult venous reservoir in cardiopulmonary bypass circuits: a preliminary report.