“public-safety frequency bands”的概念、定义、翻译、参考文献-科学参考

单词	public-safety frequency bands
释义	public-safety frequency bands [`pǝb·lik ¦sāf·tē `frē·kwǝn·sē ´banz] ^{COMMUNICATIONS} Radio-frequency bands allocated in the United States for communication on land between base stations and mobile stations or between mobile stations by police, fire, highway, forestry, and emergency services.
随便看	stratosphere radiation stratospheric coupling stratospheric steering stratotype stratovolcano Stratton pseudoscope solepiece sole plane soleplate soleus solfatara sol-gel glass solid solid angle solid asphalt solid box solid car solid coupling solid crib timbering solid cutter solid die solid-dielectric capacitor solid drilling solid-electrolyte battery solid-electrolyte fuel cell

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