spra meaning in English

血清阳性类风湿性关节炎

With the hardness tests , it is indicated the hardness of the nano alumina or nano silicon carbide coating is improved to 1 . 6 - 2 . 5 times as that of the plasma spraying coating . with the wearing tests , it is indicated that low laser power employed , the wearing performance of the coating without nano material increase to 1 . 3 times as that of the plasma coating , at the same time , the wearing performance of the coating with nano material increase 2 . 3 - 6 times as that of the plasma spraying coating , the wearing mechanism is further analyzed . with the erosion tests , it is indicated that the erosion performance of the coating with nano material increase five times as that of the plasma spra
与相应等离子喷涂层相比，硬度测试表明，含纳米al _ 2o _ 3或sic的各种复合涂层硬度提高了0 . 6 - 1 . 5倍左右；耐磨性测试表明，小功率下单纯的激光重熔耐磨性提高了30 ，而纳米渗入后涂层的耐磨性提高了1 . 3 - 5倍左右，对耐磨性提高的机理作了进一步的探索和分析研究；耐蚀性测试表明，经激光熔覆纳米渗入后的各种涂层耐蚀性能提高了4倍以上，同时涂层厚度、表面质量对腐蚀性能有影响。