“firefighter”的概念、定义、翻译、参考文献-科学参考

单词	firefighter
释义	firefighter Encyclopedia 工学灭火技术与工程释 firefighter消防员在专业消防组织中，从事火灾预防和扑救、灾害事故抢险救援和人员救助工作的人员。
随便看	principal module principal moment principal moment of inertia principal net of a mapping principal net of the flow principal neutral point principal nilpotent orbit principal norm principal normal principal normal complex principal normal form principal normal line principal normal plane principal normal section principal normal surface principal normal vector principal number principal nutation principal object principal offender principal of land laws principal of least dissipation of energy principal open set principal optical axis principal orbit

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