Have a variety of ancient water on the apparatus, such as Egypt's chain pump (17th century BC), Chinese桔槔(17th century BC), windlass (11th century BC) and water (1 century AD).

古代就已有各種提水器具99久久免费看,视频，例如埃及的鏈泵(公元前17世紀)黄色高清无码在线，中國的桔槔(公元前17世紀)、轆轤(公元前11世紀)和水車(公元1世紀)中文字幕在线更新资源站。

The Chuang Tzu 》 recorded the way to take water from shaduf; Digging well for irrigation in Han Dynasty period; fixing the pond and building the aqueduct in Tang and Song dynasty , and the usage of dragon bone car, hurdy-gurdy, all recorded in history books, also recorded in 《 The Chinese agriculture history draft 》.

莊子》記載的桔槔取水欧洲性爱一级二级网站视频；兩漢時的鑿井灌田；唐宋時修塘筑渠人人操人人草色，以及龍骨車午夜熟女毛片、筒車的運用，史不乏書黄av在线日韩，并載入《中國農(nóng)業(yè)史稿》美女裸体日韩成人网站大全。

It absorbed the merits of different mechanical structures, applied the mechanic principles of folk waterwheel, barrel car, as well as shaduf, cam, and balance weigh beam, and thus was an automatic observatory, which had the multi function of observation, demonstration and time giving, and it gained or lost no more than one second per day. It was the ancestor of the mechanical clocks, since

它吸取各家機械結(jié)構(gòu)之長，采用民間水車一级AAAAAA大黄片、筒車亚洲日韩一区二区三区网站，以及桔槔、凸輪国产醉酒迷奷系列在线观看、天平秤桿等機械原理国产AV大学生情侣AV，是集觀測、演示和報時為一體的自動化天文臺中文,不卡,AV，精確度已達到誤差每日一秒六六六日黄色视频，更因為采用了早期的擒縱機構(gòu)www.影音资源.com，成為機械鐘的祖先。