... ground a line 接地线 ground level line地平线 ground control line 地面控制绳 ...
双语例句
1
The carbon block consists of two electrodes spaced so that any voltage above the design level is arced from line to ground.
碳块中有两个彼此间隔的电极，任意高于设计标准的电压都可以跨过电线入地。
2
Using the level difference - the groundline of the site goes up from the passage of approach by 1m - the building is constructed so that it may be half-buried.