There are many indexes for glacial test, among them direct and also the most important is ice layer thickness and its varieties.
冰的检测指标有很多，其中最直接也是最重要的就是冰层厚度及其变化。
This system can still apply extensively in the automatic detection of channel, river, reservoir and lakes ice layer thickness change.
该系统还可广泛应用于渠道、河流、水库和湖泊冰层厚度变化的自动检测中。
So blankets of snow and ice grains mounted layer upon layer and were of such great thickness that the weight of the upper layers compressed the lower ones.
因而雪花覆盖层和冰粒层层堆积起来直到如此之大的厚度以致较上层的重量压缩较下层。
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