AA-60 f i re do or A-60 级防火门(A-60 ji f a ng huo m e n)a—h un d r e d-y e ar ret u r n p e ri od 百年一遇abras i ve (喷砂用得)磨料 abrasi v e pap e r 砂纸A C g en e r ato r 沟通发电机AC motor 沟通电动机acce l era ted corro s ion testing 加速腐蚀试验a c ce pt anc e c r i t eria 合格准则 a c ce s s h ole (f o r w eldi n g) =cop e ho le 焊接工艺孔a cm od ation a n d p o w er p l atform (APP) 生活动力平台a c cor d i ng to =i n a c c o r da nce wi t h =i n l i ne with =a s per =i n the lig ht of 根据acet y len e gas 乙炔acid e l e ct r ode 酸性焊条acid p r o of cement 防酸水泥 add i t i ve 添加剂adher e t o 遵守(动词)adherenc e t o 遵守(名词)a d j acent co lum ns 相临立柱adv e rse bin a tion o f loads 荷载得不利组合a dverse con d i t ion 不利条件a er onautical rad i o system 航空无线电系统A F C (ap p ro v ed for c on st ruction) 建造批准a for e ment i oned 上述得aft wi nch 船艉绞车agitato r 搅