siderostat
/'sidәrә,stæt/
📖 中文释义
- n. [天]定星镜
📘 English Definition（英文释义）
- n. An apparatus consisting essentially of a mirror moved
- by clockwork so as to throw the rays of the sun or a star in a fixed
- direction; -- a more general term for heliostat.
/'sidәrә,stæt/