請幫忙翻譯成英文

1. Riprap AACS - the stone tablets in the roadbed AACS roadbed on the setting of a certain cushion thickness and the degree of gap-rock, the rock tablet interface between the upper and lower temperature gradient, from the rock-air convection, heat exchange a convection dominated by negative temperature plateau permafrost zone temperature is greater than money-money climate characteristics, speed up the formation of the roadbed basement heat, the lower the temperature, the effect of the protection of permafrost.

2. Gravel (stone tablet) berm or berm measures - one or both sides in the roadbed landfill gravel, or stone tablets, a bank or berm. Lithotripsy (stone tablet) slope of the air gap to a certain temperature gradient generated under convection winter quarter lithotripsy (stone tablet) with strong air convection heat transfer is conducive to formation heat, warm gravel (stone tablet) air convection reduced role, the introduction of heat generated Cover, reduce the heat and warm to the lower temperature, the effect of the protection of permafrost

3. Ventilation control measures - planted in the roadbed in the standard horizontal ventilation tubes, in the cold of winter, convection, strengthening the roadbed fill the heat is conducive to reducing basal temperature, increase the stability of permafrost

4. Hot rods - the hot rod is the use of the media within the two-phase gas-liquid conversion, relying on the evaporator and condenser temperature difference between the through convection loop to achieve the heat conduction system. 32 km Qinghai-Tibet railway roadbed using hot rods measures

5. Also Zheyangpeng, insulation, basement replacement, subgrade drainage, road and bridge transition, the bridge foundation.