“photographic zenith tube”的概念、定义、翻译、参考文献-科学参考

单词	photographic zenith tube
释义	photographic zenith tube Encyclopedia 理学照相天顶筒释 photographic zenith tube照相天顶筒测量世界时和纬度的仪器。 Astronomy photographic zenith tube缩写：PZT。照相天顶筒
随便看	DC motor servo system dCMP DCN DCP DCPD DCPO D.C.potentiometer DCS d.c. set D. C. Spencer D. C. Spencer (1912—2001) D.C. SQUID DC SQUID dc-SQUID D.C.stabilized source DC stabilized speed motor DC standard resistor DCTD DCTL dCTP DC traction substation DC transmission converter DC voltage standard DC white dwarf DC withstand voltage test

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