此题范围较广,在国外混凝土工业已是常见词,在我国都讲混凝土工程,很少讲混凝土工业,因为我国确实还未建立起混凝土工业。今年国家科委、经委、计委于四月份召开的建工、建材技术政策讨论会上,曾初步提出发展商品混凝土和发展混凝土构配件, This topic has a wide range of issues. It is a common word in foreign concrete industry. Concrete works in China are all talked about, and concrete industry is seldom talked about, because China hasn’t established a concrete industry. This year, the State Science and Technology Commission, the Economic Commission and the Planning Commission held preliminary discussions on the development of construction and building material technology policies in April. They have initially proposed the development of commercial concrete and the development of concrete structural accessories.