组成

build-up welding

pulse build-up time【电子】

bead weld【机】;surfacing welding【机】;build-up welding【机】

assembly【机】;build-up【机】;fixing【机】

pressure build-up and vent valve

build-up【统计】

pressure build-up vaporized valve

build-up time【计】;building-up time【计】;built-up time【计】