草原地表抗风蚀的有效植被盖度为60%；
The effective vegetation coverage of resisting wind erosion in grassland was 60%.
本文的目的是对青藏高原地表反照率和冷热源参数进行定量反演。
The objective of this paper is to retrieve the albedo of the plateau and then to calculate the parameters about hot or cold source quantitatively.
他们在给《卫报》的一封电邮中写道：“我们目前正在进行一项北京平原地区地表下沉对关键基础设施影响的详细分析（比如高铁）。
"We are currently carrying out a detailed analysis of the impacts of subsidence on critical infrastructure (eg high-speed railways) in the Beijing plain, " they said in an email to the Guardian.
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