At the bottom is the specially ground milling cutter used to replicate the contour of the barrel.
在底部，特别是地面铣刀用于复制的轮廓桶。
2
The distributing trend of soil moisture contour map in under soil is rising up from bottom to surface, which indicates that ground water level has no influence on soil moisture variation.
下部土壤含水率等值线分布由底部向上都呈递增趋势，表明本次试验土壤水分动态变化不受地下水位的影响。
3
Such structural features can be identified by contouring directly on either top or bottom surface of the reservoir with a contour interval of 1-5m.