| 1. | Standard specification for air - entraining admixtures for concrete
混凝土引气剂的标准规范 |
| 2. | Research on the freeze thaw durability of pfa concrete
引气粉煤灰混凝土抗冻融耐久性的研究 |
| 3. | Standard test method for air - entraining admixtures for concrete
混凝土引气剂的标准试验方法 |
| 4. | Experimental study of the dynamic responses of the ecs ' s bleed system
飞机环控系统引气分系统动态特性试验研究 |
| 5. | Butterfly shape petal fracture analysis of aup leading gas valve on boeing 777 plane
引气活门蝶形瓣片断裂分析 |
| 6. | Research on freezing - resistance durability of air - entraining fly ash concrete
引气粉煤灰混凝土抗冻融耐久性的研究 |
| 7. | However , the frost resistance of air entraining concrete decrease after adding salts
而引气混凝土中掺盐后抗盐冻剥蚀能力均有所下降。 |
| 8. | The abrasion resistance of air entraining concrete has little changes when salts added into concrete
引气混凝土中掺盐后耐磨性基本不变。 |
| 9. | The paper analyzes its performance with the range of the content of gas former , expanding pearlite and water - cement ratio
文中对引气剂用量、珍珠岩用量及水灰比对材料吸声性能影响进行了研究与分析。 |
| 10. | Nowadays , air entraining , mineral admixture and additive have been main measure to improve the concrete frost resistance and impermeability
当前,引气和掺加矿物掺合料及外加剂已成为提高混凝土抗冻性和抗渗性的主要措施。 |
