“cannelure”的概念、定义、翻译、参考文献-科学参考

单词	cannelure
释义	cannelure [`kan·ǝl·u̇r] ^ORDNANCE 1. A groove in a bullet which contains a lubricant, or into which the cartridge is crimped. 2. A groove in a cartridge case providing a purchase for the extractor. 3. A ringlike groove for locking the jacket of an armor-piercing bullet to the core. 4. A ringlike groove in the rotating band of a gun projectile to lessen the resistance offered to the gun rifling and to prevent fringing grooves.
随便看	tangential coma tangential component tangential coordinates tangential curvature tangential developable tangential focus tangential helical-flow turbine tangential plane tangential polar equation tangential stress tangential surface tangential velocity tangential wave tangential wave path tangent latitude error tangent offset tangent plane tangent point tangent screw tangent space tangent surface tangent vector tangent welding tangerine tangerine oil

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