“back draft”的概念、定义、翻译、参考文献-科学参考

单词	back draft
释义	back draft [`bak ´draft] ^METALLURGY A reversed taper given to a casting model or pattern to prevent its withdrawal from the mold.
随便看	cnidoblast cnidocil cnidocyte cnidophore Cnidospora CNO cycles c-number theory Co CoA coacervate coacervation coach screw coadaptation coagulability test coagulant coagulase coagulation coagulation time Coahuilan coak coal coal auger coal ball coal bank coal barrier

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