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。

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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。

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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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Where water is scarce, the development of crop varieties that grow under conditions of low moisture or temporary drought could boost yields and lengthen the time that farmland is productive.

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