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以往,我厂使用两台三十年代的成型机,生产水泥煤渣空心砖,这种情况与社会主义建设的蓬勃发展很不相适应。在工业学大庆的群众运动中,我们大搞技术革
In the past, our factory used two 1930s molding machines to produce cement cinder hollow bricks. This kind of situation was incompatible with the vigorous development of socialist construction. In the Daqing mass movement of industry, we engaged in technological leather