The Gears Geolocation API can make use of network servers to obtain a positionfix.
Gears Geolocation API可以利用网络服务器获取位置装置。
2
A two-dimensional positionfix that includes only horizontal coordinates. It requires a minimum of three visible satellites.
二维定位模式，只有平面的座标。必需至少取得三个卫星的资料。
3
Given that position information does not change too often, it is usually sufficient to establish an initial positionfix and then acquire updates periodically after that.