Micro - landform and micro - climate could exert great influence on conductor icing.微地形微气候对导线覆冰有很重大的影响.Condition of special landform, grade water natural resources, suit piscatorial development.非凡的地形 、 优质的水资源条件, 适合渔业的发展....
The Breguet - Richet Quadrotor helicopter Gyroplane No.1 built in 1907 is reported to have lifted into flight.据报道,1907年,Breguet-Richet四旋翼直升机“旋翼机1号”已经飞了起来....