Development of yellow colour in pale colours when subjected to heat and/or light. When overcured for long periods or excessively high temperatures white powder coatings will darken or "yellow".
当涂层受热和/或光线照射下变化的趋势，长时间在较高的温度下，白色粉末涂料会变暗或发黄。
This paper mainly research on the feasibility technique of high speed fan-type light wheel coal grinding machine in boiler powder manufacturing system which applied in power plant used brown coal.
本文主要研究应用在发电厂以褐煤为燃料的锅炉制粉系统中的高速风扇式轻型轮磨煤机可行性技术。
The lamp tube after using the method for coating the powder has the advantages of high luminescence efficiency, small light wane and long service life.
用本发明方法涂粉后的灯管，发光效率高、光衰小、使用寿命长。
The refractory plate is made with high grade bauxite, burn-off stone, light synthetic foam powder, aluminum titanate powder, phosphoric acid and water, and through mixing, ball milling and casting.
本发明耐火板材，其由高级铝矾土、烧化石、轻质泡沫合成粉、钛酸铝合成粉、磷酸、水经混合球磨后，浇铸成耐火板材。
The built-in high voltage static generator applies very light spraying gun (only 450g) with the electrical circuit imported from Germany and full stainless steel powder supply bucket.
内置式高压静电发生器，采用德国进口电路、重量极轻的喷枪（仅450克）和全不锈钢的供粉桶。
Fluorescent layer produced by the fluorescent powder has favorable printing characteristic, sky-high ultraviolet light absorbing quality and light-emitting efficiency.
这种荧光粉制作出的荧光层具有良好的印刷特性，极高的紫外光吸收能力和发光效率。
Fluorescent layer produced by the fluorescent powder has favorable printing characteristic, sky-high ultraviolet light absorbing quality and light-emitting efficiency.
这种荧光粉制作出的荧光层具有良好的印刷特性，极高的紫外光吸收能力和发光效率。
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