The key problems of technique for plasma hardfacing for sealing face of valve such as blank making. Process selecting and quality controlling.
就阀门密封面等离子弧堆焊的技术关键问题：毛坯加工、工艺选择及质量控制等。
The control of barium sulfate grains sizes and their distribution during the production of baryta paper is an important technique for controlling the product quality.
硫酸钡颗粒大小及其分布的控制是钡地纸生产工艺中的一项重要质量控制技术。
This paper expounds the application of grouting technology in strengthening old road bed. It also discusses the technology, quality controlling, treatment result and evaluation of the technique.
阐述了灌浆技术在旧路基加固上的应用以及灌浆的施工工艺、施工质量控制、处治效果与评价。
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