欧美极度肠交另类_国产91视频地址_日本在线看视频亚洲_国产仑伦乱老女人一区二区_亚洲精品国产无码毛片,欢乐颂小说在线阅读,欢乐颂小说txt,盗墓笔记全集

Contact Us

220V Cooling Fan of the invention

Date: 2015-6-4   Click: 1527 Times

"220V Cooling Fan" originated in 1830, a man named James Byron was inspired by American watches from the structure, the invention can be fixed on a ceiling, with a spring-driven mechanical fan. This fan blades rotate slowly bring cool people feel cool, but have to climb the ladder to the winding, very troublesome. In 1872, a Frenchman named Joseph has developed a turbo start by clockwork, gear drive chain means mechanical "220V Cooling Fan", a mechanical fan the fan than Byron more sophisticated invention, use is also convenient . In 1880, the first time the Americans Shule blade mounted directly on the motor, connect the power supply, the rapid rotation of the blades, cool breeze blowing, which is the world's first "220V Cooling Fan".

Back to: Industry news

+86-0769-83660708

Home Product News Contact

主站蜘蛛池模板: 东丰县| 波密县| 葫芦岛市| 大冶市| 札达县| 文水县| 万源市| 彩票| 肇东市| 河间市| 融水| 土默特右旗| 靖江市| 古田县| 九台市| 扶余县| 临漳县| 古浪县| 连州市| 大庆市| 玉树县| 东莞市| 柏乡县| 安吉县| 玉林市| 宁安市| 青岛市| 师宗县| 霍州市| 呈贡县| 宁化县| 那坡县| 宁明县| 栾川县| 茂名市| 鄢陵县| 会泽县| 冀州市| 佛山市| 墨脱县| 城步|