求翻译：龙岗火山群位于中国东北吉林省东南部的龙岗山脉中，界于辉南县和靖宇县境内，东西长85 km，南北宽50 km，面积约4250 km2，火山岩面积约为1700 km2（图1），其东部与著名的长白山火山毗邻。是什么意思？

The Longgang volcanic group is located in Longgang Mountains in southeast China's northeast Jilin Province, the sector in Huinan County and Jingyu County, east to west and 85 km, 50 km in width from north to south, an area of ​​about 4250 km2 in the volcanic area of ​​approximately 1700 km2 (Figure

Longgang volcanic group is located in northeast China's Jilin Province in south-east, and Longgang mountains in Huinan and Jing Yu County, 85 Km west, north and south for 50 km wide, covering an area of about 4250 km2 area, volcanic rock to approximately 1700 km2 (Figure 1) and the eastern and the f

正在翻译，请等待...

Longgang volcanic swarm in Longgang mountains in southeastern of Jilin province in Northeast China, territories in huinan County and Jingyu internally, it is long 85 km, North-South width of 50 km, an area of about 4250 km2, volcanic rocks in an area of approximately 1700 km2 (Figure 1), and on its

The dragon hillock volcanic cluster is located southeast in the Northeast China Jilin Province's Longgang Shan arteries, within the boundaries of the Huinan county and Jingyu County, thing long 85 km, north and south width 50 km, area 4250 km2, the volcanic rock area approximately is approximately 1