在毛主席的无产阶级革命路线指引下,我厂于一九七二年开展了看谱镜的分析工作。我们使用的是天津光学精密仪器厂制造的双试台WX—3型看谱镜。该仪器性能良好,能满足工厂试验室钢材的定性工作。通过一年多的实践,我们认为看谱镜是合金钢定性的良好方法。与此同时,我们还使一台处于长期封存、价值数万元的苏制30型中型石英摄谱 Under the guidance of Chairman Mao’s proletarian revolutionary line, our factory conducted an analysis of spectacles in 1972. We are using double precision optical bench made in Tianjin Instrument WX-3 type spectroscope. The instrument has good performance and can meet the qualitative work of factory laboratory steel. After more than a year of practice, we think of spectacles as a good way to characterize alloy steels. In the meantime, we have also brought Soviet-made 30 medium-sized quartz photographic plates in the long-term stockpile worth tens of thousands of yuan