“health effects of laser”的概念、定义、翻译、参考文献-科学参考

单词	health effects of laser
释义	health effects of laser Encyclopedia 工学激光的健康影响释 health effects of laser激光的健康影响激光属于一种特殊的人造电磁辐射，在使用时间过长、使用方法错误等情况下对人体产生的不良影响和危害。
随便看	projectively extended real numbers projectively flat metric projectively flat space projectively flat structure projectively independent point projectively normal curve projectively trivial ring projective manifold projective mapping projective matrix projective measure projective mensuration projective method projective metric projective metric element projective metric space projective minimal surface projective model projective module projective morphism projective multiplier projective normal projective normalization projective n-space projective object

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