“percussion mark”的概念、定义、翻译、参考文献-科学参考

单词	percussion mark
释义	percussion mark [pǝr`kǝsh·ǝn ´märk] ^GEOLOGY A small, crescent-shaped scar produced on a hard, dense pebble by a blow.
随便看	ram-type turret lathe ramus Rancholabrean randannite randkluft random access random-access discrete address random-access disk file random-access input/output random-access memory random-access programming random-access storage random coil random copolymer random diffusion chamber random digit random error random experiments random forecast random function random interstratification randomization randomized blocks randomized jitter randomized test

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