【導(dǎo)讀】sample;testcoupon;coupon;prospecthole;age;instar;concretedam;concretepump;concreteadditive;concretelayer;concreteplant;concreteposition;concreteingredient;barreinforcement;concreteiron;ironreinforcement;rebar;reinforcedbar;reinforcement;reinforcementbar;reinforcementmetal;reinforcingbar;reinforcingiron;reinforcingsteel;steelbar;cover;barstraightening;barstraightener;reinforcingrod;armoredconcrete;armouredconcrete;ferroconcrete;ironconcrete;reinforcedconcrete;