the common method is to use a small amount of kerosene to preblen_英语解答

the common method is to use a small amount of kerosene to preblend the stone in order to ensure reliable bonding of stone and asphalt.4694

人气：417 ℃　时间：2020-01-25 09:48:45

解答

普通的方法是用少量的煤油和石头预混合来确保石头和沥青牢牢地粘结