“refraction seismic observation system”的概念、定义、翻译、参考文献-科学参考

单词	refraction seismic observation system
释义	refraction seismic observation system Encyclopedia 理学折射地震探测释 refraction seismic observation system折射地震观测系统在折射波地震探测过程中，由不同排列关系的震源和接收器组成的观测系统。
随便看	second critical magnetic field second cultivated machinery second curvature second demographic transition second derivative second derivative test second derivative test discriminant second development second difference second differential second differential parameter second differentiator second distance second dual second dual module second dual space second economics adjustment of China second eigenfunction second electron emission Second Emperor of Qin Dynasty Second Empire of Brazil second factor second fall-line second Fermat point second field free region

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