hour angle-declination axis mount的意思|示意
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小时角-倾斜轴安装
hour angle-declination axis mount的网络常见释义
时角赤纬轴座架 ... hour angle system of coordinate ==> 时角坐标系 hour angle-declination axis mount ==> 时角赤纬轴座架 hour corrector spring ==> 时调整簧 ...