heliographs
n. 太阳摄影机;日光反射信号器;照相制版
vi. 用日光反射信号器发送信息
vt. 用太阳摄影机拍摄;用日光反射信号器发送
复数 heliographs
第三人称单数 heliographs
现在分词 heliographing
过去式 heliographed
过去分词 heliographed
例句
More recently, so-called “heliographs” have been used to relay military signals in a similar way.
更近一点例子是,“日光反射信号器”一直通过类似的方式传递军事信号。
More recently, so-called "heliographs" have been used to relay military signals in a similar way.