英语词汇“photographic zenith tube, PZT”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	photographic zenith tube, PZT
释义	photographic zenith tube, PZT 照相天顶筒；通过对天顶附近恒星照相；以测定世界时和纬度的仪器。
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