Lamp shell surface cover ring for standard size, suitable for all kinds of lamps installation;
灯壳面盖环为标准尺寸，适合各种灯具的安装装配；
As shed-tunnel often has low depth and thin surface cover, it's easier to be damaged in earthquake.
由于棚洞的埋深很浅，覆盖土厚度薄，地震时往往产生破坏。
There are many factors affecting the heat effect, and the earth surface cover is the key one.
影响城市热环境的因素有很多，其中地表覆盖类型是热效应影响因素中较为重要的一个。
When surface cover of natural grassland reaches 90%, the benefits for grass reducing surface runoff is above 90% and not any erosion occurs.
当草地地面覆盖达90%时，草被拦蓄径流效益达90%以上，而基本上无侵蚀发生。
When surface cover of natural grassland reaches 90%, the benefits for grass reducing surface runoff is above 90% and not any erosion occurs.
当草地地面覆盖达90%时，草被拦蓄径流效益达90%以上，而基本上无侵蚀发生。
应用推荐