siderostat的翻译，读音
英/'sidәrә,stæt/
释义：
n. [天]定星镜
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.
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.