释义 |
trial pit
trial pit[′trīl ‚pit] (mining engineering) A shallow hole, 2 to 3 feet (60 to 90 centimeters) in diameter, put down to test shallow minerals or to establish the nature and thickness of superficial deposits and depth to bedrock. trial pitA small-diameter hole in the ground, excavated to investigate the nature of the soil and to determine the distance to bedrock. |