permafrost的例句大全

The adaptability study shows that reduced the temperature at subgrade top by increasing the thickness of the structure set the layer of graded crushed stone or asphalt macadam is benefit to protect the permafrost.

适应性研究表明，增加结构层厚度、设置级配碎石层或者沥青碎石层，一方面将导致路面结构基层融沉附加应力增大；另一方面能够有效的降低路基顶面温度，有利于保护冻土。

This is the vegetational climate of arctic permafrost regions.

这是北极永冻地区的植物气候.

The calculation results show that pavement types have positive influence on thermal regime in permafrost embankments, and concrete pavement can effectively decrease pavement temperature, delay falling velocity of permafrost table, and protect the permafrost under embankments effectively.

结果表明：路面类型对冻土路基温度场有着重要影响，水泥路面的采用可有效地降低路面温度，延缓冻土上限下降速率，从而可以有效保护基底多年冻土；

Therefore, studying on subgrade state in permafrost during QTR' operation is a premise of assurance of its long-term, safe and reliable operation in permafrost region.

因此，开展运营期多年冻土区路基工程状态的研究，是保证青藏铁路多年冻土区路基工程长期、安全、可靠运营的前提。