治疗冠周炎的临床观察 -打印版 关键词] FE复合酶；喷雾剂；冠周炎 [gap=988]Key words] FE composite enzyme;Spraying reagent;Periodontitis
双语例句
1
The activated aluminium powder had been produced by multistage-spraying and spinning atomized equipment and can continuously hydrolyze with water without any chemical reagent.