ground line的用法和样例：
例句
- The principles of microstrip balun and printed dipole were analyzed, and the antenna's ground plane was extended and shaped to form the reflecting structure.
分析微带巴伦和印制偶极子的工作原理，延伸并成形天线的地平面以得到反射结构。 - 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。 - 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。
