velocity ratio of knife and machine

insulated-tip diathermic knife IT knife

ratio of pulp velocity and sire velocity

velocity derived from velocity spectrum

60 Co gamma knife

a fruit knife

abscess knife

accelerator gamma knife

air knife

air knife coating

air knife nozzle gap

air-knife

amputating knife

amputation knife

Analysis of the radio knife

angular knife

arachnoid knife

Argon knife

argon-helium knife