bearing line

• 方位线,基线

bearing line的用法和样例：

例句

1. The base line can be set out as a single or double chain.
   基线可作为一条单链系或双链系。
2. Dr Beavan has started projects to develop long-base line tiltmeters with earthquake prediction in mind.
   比花恩博士考虑到地震预报，开始发展长基线倾斜仪。