Wind turbines are classified into two general types : horizontal axis and vertical axis 风涡轮分为两种：水平轴和垂直轴。
Perpendicular axis theorem 垂直轴定理
The y - axis is usually the vertical axis and contains the data from the value tab Y轴通常为垂直轴，包含“值”选项卡中的数据。
Series solution of electric field intensity on perpendicular axis of elliptic charged ring 椭圆形带电环垂直轴上的电场强度级数解
There are a number of available designs for both horizontal and vertical axis wind turbine types 水平轴和垂直轴的涡轮都有几咱类型。
Vertical axis machines do not depend on wind direction , unlike horizontal axis wind turbines 与水平轴涡轮机不同的是，垂直轴涡轮机与风向无关。
The most common being horizontal axis machines ( hawt ) , fewer vertical axis machines are available commercially 最常用的是水平轴涡轮机（ hawt ） ，商用的垂直轴涡轮机很少用。
Track - balls can be made to sense rotation about the vertical axis in addition to that about the two horizontal axes 轨迹球兴驻能感知绕两个水平轴的转动，还能感知围绕垂直轴的转动。
Rotodynamic pumps - forces and moments on flanges - centrifugal , mixed flow and axial flow - horizontal and vertical shafts 旋转动力泵.法兰盘受力和力矩.离心混流和轴向流.水平和垂直轴
Although vertical axis wind turbines have existed for centuries , they are not as common as their horizontal counterparts 尽管垂直轴涡轮机已经存在几个世纪，但是并不如水平轴涡轮那么通用。
