1、[天]恒时钟
...黑白摄影black-and-white photography恒时钟sidereal clock恒星摄影机stellar camera ...
2、[天]恒星时钟
... side-rake 侧向搂草机 sidereal clock 恒星时钟 sidereostat 定星镜 ...
3、[天]恒星钟
sidereal clock 恒时钟; 恒星时计; 恒星时钟; 恒星钟...
4、恒星时计
...sidereal chronometer 恒星时计; 恒星天文钟sidereal clock 恒时钟; 恒星时计; 恒星时钟; 恒星钟sidereal drive 恒星驱动 ...