 ... engineering I have as yet seen in China. They are in the shape of enormous but lightly constructed wheels, some of them between 30 and 40 feet in diameter. The paddles are of matting, and are propelled by the force of the current. Between each pair...  Up the Yang-tse - Trang 76bởi Edward Harper Parker - 1891 - 308 trangXem Toàn bộ - Giới thiệu về cuốn sách này
 | United States. Bureau of Foreign and Domestic Commerce - 1900 - 546 trang
...diagonally across the tire face (so to speak) * 1,ooo cash equal about 45 cents in United States currency. of the wheel is a bamboo tube, closed at one end and...of which it emerges only when the position of the tubes is such that the water can not flow out. Of course, this position is reversed when the wheel... | |
 | Edward Harper Parker - 1891 - 360 trang
...propelled by the force of the current. Between each pair of paddles, and running diagonally across the tire-face (so to speak) of the wheel, is a bamboo...when the position of the tube is such that the water cannot flow out. Of course this position is reversed when the wheel has completed half a revolution,... | |
 | United States. Bureau of Foreign Commerce - 1900 - 546 trang
...the force of the current. Between each pair of paddles and running diagonally across the lire face (so to speak) of the wheel is a bamboo tube, closed...of which it emerges only when the position of the tubes is such that the water can not flow out. Of course, this position is reversed when the wheel... | |
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