请君“手下留情”敬文某企业，几年前曾引进一条生产线。到目前，该生产线在国际上仍为一流。可近几年，由于该企业对它的“技术改造”不断，使产品质量逐年下降，丢掉了大片的国际市场。六十年代，一些国有企业，对引进的关键设备，都有一条“还原为主”的维修制度。据说... Asked King to “remember the situation,” King Wen of a company, introduced a production line a few years ago. At present, the production line is still first-class internationally. In recent years, due to the continuous “technological transformation” of the company, the quality of its products has been declining year by year, and large international markets have been lost. In the 1960s, some state-owned enterprises had a “reduction-based” maintenance system for the key equipment introduced. It is said that...