地下换热管热变形引起的管-土间隙
朱晓林1,2, 于鸣3, 高青1,2, 王有镗1,2

Pipe-soil gap induced by thermal deformation of ground heat exchange pipe
ZHU Xiao-lin1,2, YU Ming3, GAO Qing1,2, WANG You-tang1,2
图4 特征点
Fig.4 Characteristic points