“air-acetylene welding”的概念、定义、翻译、参考文献-科学参考

单词	air-acetylene welding
释义	air-acetylene welding 空气-乙炔焊接
随便看	defined external symbol defined file defined instruction defined item defined pension plan defined terms defined variable defined word define system define table define tape file command define-the-file defining constant defining occurrence defining polynomial defining postulate defining range defining relation defining scalar definite definite binomial coefficient definite designation definite division definited spare parts list definite equation

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