2022亚洲国产美女视频免费网站_在线观看国产三级片一区_国产成人无码久久久天美传媒_亚洲日本精品国产一区二区三区_国产语露脸视频在线观看_99精品高清一二区亚洲_欧美自拍偷拍段视频_日韩av成人久久_少妇毛茸茸的bbw_娇妻丁字裤公交车被在线观看

采用電熔法合成原料，制品具有較高的耐火度及機械強度，較低的熱膨脹系數(shù)，良好的抗渣性能等優(yōu)點，可廣泛應用于磁性行業(yè)電窯推板磚、窯具、爐襯、玻璃窯爐、廢熱鍋爐等各種熱工設備。
Using the electrocast raw material,the product has such advantages as high refractoriness and mechanical intensity ,small coefficient of heat-espansion ,good slags-resistance,It is used widely in the pushing board in electric kiln of the magnetic material trade,tools of kiln ,the lining of the furnace and all kinds of devices of heat industy.