直埋电缆回填土导热系数测试
吕洪坤,吴宇豪,冯彦皓,汪明军,俞自涛

Measurement of thermal conductivity of backfill soil for buried power cable
Hong-kun LV,Yu-hao WU,Yan-hao FENG,Ming-jun WANG,Zi-tao YU
图 7 土壤中的颗粒、团聚体、孔隙和水分示意图
Fig.7 Schematic diagram of particles, aggregates, pores and water in soil