Snow aids farmers by keeping heart in the lower ground levels , thereby saving the seeds from freezing 雪对农民是一种帮助，因为它保持地层土壤的温度，使种子不致冻死。
The resulting content of so2 in the gas - air mixture at ground level is called the ambient concentration 在到达地面时之烟气-空气混合物中的so2最终含量，称为“落地浓度” 。
Snow aids farmers by keeping heart in the lower ground levels , thereby saving the seeds from freezing 雪对农民是一种帮助，因为它保持地层土壤的温度，从而使种子不致冻死。
At ground level ozone is a dangerous pollutant , but at altitude it blocks the passage of harmful ultraviolet light 臭氧在地表是一种有害气体，但在高空它阻挡有害的紫外光。
Roads have been assumed to be at ground level in all cases and sensitive receivers were at 1 . 2m above ground 在任何情况下，假设道路是处于平地，而敏感用途则离地面1 . 2米。
Snow aids farmers by keeping heart in the lower ground levels , thereby saving the seeds from freezing 雪通过保持种子处于较低的能级来帮助农民，因此可以通过冷冻来贮藏种子。
The airport has two outdoor car parks car parks 1 and 5 at ground level and a multi - storey car park car park 4 机场设有二个露天地面停车场一及五号及一个多层停车场四号。
At ground level ozone is a dangerous pollutant , but at altitude it blocks the passage of harmful ultraviolet light 近地面，臭氧是种危险的污染物，但在高空，它阻挡了有害的紫外线通过。
To mitigate impacts at ground level , about 5 km of the 7 . 4 km railway will be constructed on viaduct 为减少对路面的影响，在落马洲支线全长七点四公里的铁路中，约五公里铁路兴建在高架桥上。
Environmental testing - part 2 : tests ; test sa : simulated solar radiation at ground level iec 60068 - 2 - 5 : 1975 ; german version en 60068 - 2 - 5 : 1999 环境试验.第2部分:试验.试验sa :模拟地面太阳辐射
