AA-60 fire door A-60 级防火门a-hundred-year return period 百年一遇abrasive (喷砂用的)磨料 abrasive paper 砂纸AC generator 沟通发电机 AC motor 沟通电动机accelerated corrosion testing 加速腐蚀试验acceptance criteria 合格准则 access hole (for welding)=cope hole 焊接工艺孔accommodation and power platform (APP) 生活动力平台according to =in accordance with =in line with =as per =in the light of 根据acetylene gas 乙炔 acid electrode 酸性焊条acid proof cement 防酸水泥 additive 添加剂 adhere to 遵守(动词) adherence to 遵守(名词)adjacent columns 相临立柱adverse combination of loads 荷载的不利组合adverse condition 不利条件aeronautical radio system 航空无线电系统 AFC (approved for construction) 建造批准aforementioned 上述的aft winch 船艉绞车agitator 搅拌器air blower 鼓风机air compressor 空压机air drive pump 气动泵 air hoister 气动绞车air manifold 气包air tight test 气密性试验 air-hose 风带aircraft obstruction beacon 航空障碍灯alarm