The article introduces the quality, varieties and development of bar steels in Bao steel.
介绍了宝钢条钢产品的质量及品种开发。
With the development of technology and intensification of market competition, new products and new varieties are emerging.
随着科技的进步和市场竞争的加剧,新产品和新品种不断涌现。
Light storing coatings and its varieties, characteristics, manufacture and application are outlined. Its development trend is discussed.
论述了蓄光涂料的种类、特性、制造和应用时的注意事项及其开发动向。
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