很久很久以前,我国劳动人民就利用水力扬水的原理制成了水转筒车(图1)和水转翻车(图2)。这两种机械的发明年代,虽然还没查清楚,但是根据唐代刘禹锡著《机汲记》中对于水转筒车的记载,可知最少也有一千一百年历史了。直到今天, Long ago, long ago, the working people of our country made use of the principle of hydraulic lifting of water to make a water revolver (Fig. 1) and a water turning car (Fig. 2). Although the era of the invention of these two types of machinery has not yet been clarified, according to the records of the Tang Dynasty journalist Liu Yuxi’s “Kai Ji Kee” for the water revolver, it can be known that there are at least a thousand and one hundred years of history. until today,