Did you call Sam on the ground line?

Natural heights are measured above the ground line and then projected in the same way until they meet the vertical from the map.

There are actually two lines in a power line: the high voltage line and the "ground" line.

The balloon swayed a little more with the overhead rope gone, but the men on the ground lines had it firmly under control.

In 2002, construction began on the southern section of the above ground line, originally planned to be opened in 2002.

It passes on current to the ground line until the voltage reaches normal levels, and then becomes a poor conductor again.

There is no ground line and items are spread evenly over the field.

Provision of a strong ground line is essential to the moon effect.

It interrupts the ground line at some point.

Three mythic animals, a lion, a sphinx and a bull with a human head, are depicted each on a ground line.