When the robotic arm first reached that depth, it hit a hard layer of frozen soil.

当机器臂第一次达到这个沟的时候，它触到了一层硬的冻土。

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The experiment showed that with the depth of soil, soil moisture inclined to stabilization, but SMBS affected soil moisture of every layer and consuming water depth of summer maize.

得出土壤体积含水率随深度的增加而逐渐趋向稳定，但底墒影响各层的水分含量和夏玉米的耗水深度。

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The research shows that the influx depth of gravity water in soil can indicate the existence of dried soil layer and the degree it developed, which is the key factor to decide the kind of vegetation.

已有的研究表明，土壤中重力水的入渗深度能够指示土壤干层的有无和发育强弱，是决定植被类型的最主要和最关键的因素。

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