constant-bearing course [航] [水运] 定向航线 ; [航] 等方位航线
curve of constant bearing 同位线 ; 恒位线
first line of constant bearing 等方位角第一线
line of constant bearing 固定方位线 ; 等方位线
constant bearing navigation 常方位导航
Gerardus Mercator's projection, published in 1569, was immediately useful because it depicts a line of constant bearing as a straight line, which is handy for Marine navigation.
福西厄斯•墨卡托的投影于1569年问世，马上就派上了用场，因为它把不变的方位描绘为直线，这对航海非常方便。
For example, the Mercator projection is widely used by boats and ships because it produces a map in which lines of constant bearing are a straight line, which greatly simplifies navigation.
例如，墨卡托投影是广泛使用艘舟艇，因为它产生的地图中，不断轴承线一条直线，从而大大简化了导航。
The quasi-superplasticity of leaded brass for bearing cage was investigated through the constant velocity tensile test.
通过恒速拉伸试验，对一种生产保持架用铅黄铜的准超塑性进行研究。
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