There were two types of code formats that used the same tube type codes, which were in use from 1948 until these companies stopped the manufactureof standard receiving tubes.
The construction and development of tubular plates was presented. Their advantages and disadvantage, the main manufacture steps, the filling of the tubes were introduced.
本文概述了管式正极板的构造和演变,分析了它的利和弊,介绍了其制作要点和蹾粉注意事项。
3
With a view to advance the feature of arc tubes, new technology ofmanufacture for the ceramic metal halide lamp arc tubes was introduced.