The rupture Angle in the equivalent thicknessofsoil layer method is the Angle with no arrangement for the load. But the rupture Angle must change when the vehicle load is arranged.
等代土层厚度法中破裂角为没有施加荷载时的角度，而施加上车辆荷载后破裂角必然发生变化。
2
The factors affecting fibrous roots size besides the planting vegetation, it has signal positive correlation to thicknessofsoil, thick soil is good to the growth and development of plant roots.
影响须根量的因素，除植被因素外，与土层厚变显著正相关，深厚土壤有利于植物根系的生长发育。
3
Five tons ofsoil would fill a small dump truck; if spread over an acre, it would make a layer slightly less than the thicknessof a dime.