硫酸酸洗液
Sulfuric pickling solution
盐酸酸洗
chlorohydric acid pickling
acid pickling of iron
Pickling
盐酸酸洗废液
hydrochloric acid pickling wastewater
acid wastewater of hydrochloric acid
《大修须知》
Handbook of Overhaul Instruction
丙烯酸大孔树脂
acrylic macroporous resin
车辆大修
car heavy repair
vehicle maintenance management