建筑业对整个国民经济发展起着重要作用。国外房屋建筑投资一般占基本建设投资的一半左右,占国民生产总值10％左右。但建筑业与其他工业相比还是比较落后:生产效率低,周期长,质量不稳定。造成这种情况的原因,主要是建筑业的产品有其特殊 The construction industry plays an important role in the development of the entire national economy. Foreign housing construction investment generally accounts for about half of the capital construction investment and accounts for about 10% of the gross national product. However, the construction industry is still relatively backward compared with other industries: low production efficiency, long cycle, and unstable quality. The reason for this is that the products of the construction industry have their special