They take in rain and allow it to flow into the soil instead of running off.
它们吸收雨水，让雨水流进土壤，而不是流走。
2
The dynamic stiffness characteristics of tire 6.00-12 has been studied with the simulation of running tire vibration excited by the ro. ad, by means of the indoor soil bin tire tester.
The cold-heat cycle underground is closely related to the hydrogeological characteristics of various rock and soil stratum (aquifer) when groundwater source heat pump system is running.