| 1. | The author puts forward the concept of fdn , and analyzes its scope and characteristics . 2
提出飞行力学导航法的概念，并分析了其适用范围和特点。 |
| 2. | Fdn uses the software ( em - equations of motion ) to improve the navigation function of the original system , without any other navigation hardware
飞行力学导航法是一种在不增加硬件设备的情况下，单纯用软件(运动方程)明显改善原导航系统性能的导航方案。 |
| 3. | The design of fdn scheme and research of loading of digital map are given in this thesis , which have certain innovation merit and instructive meaning for engineering application
本文完成了飞行力学导航方案的设计和数字地图加载的研究，具有一定的创新性和应用价值。 |
| 4. | The principle of loading of digital map in the terrain auxiliary navigation is studied . it is concluded that fdn plays an auxiliary role in the process of loading of digital map
研究了地形辅助导航中数字地图的加载原理及飞行力学导航法在数字地图加载过程中的辅助作用。 |
| 5. | Though act - fdn is not the best admixture used to reduce slump loss , it ' s still a practicable method , for its obvious effect , stable production technology and low cost
Act - fdn虽然抑制坍落度损失的效果尚未达到最优，但为由于生产工艺变动小，效果明显，成本较低，应该是一种可行的技术路线。 |
| 6. | Act - fdn varies from common water - retaining plasticizers and complex water reducers ; it does n ' t contain compound retardants and has no bad influence on the early strength of concrete
因为act - fdn并没有复合缓凝成分，它不同于一般的保塑剂或复合型减水剂，突出的特点是对混凝土的早期强度无不利影响。 |
| 7. | In this thesis , the author gives a new navigation scheme for the flight vehicle : flight dynamics navigation method ( fdn ) , and studies the principles of loading of digital map in the terrain auxiliary navigation
本文论证了一种具有创新性质的导航方案? ?飞行力学导航法，并对地形辅助导航中数字地图的加载问题进行了研究。 |
| 8. | Water - reducing agent , which researched by china building material science research institute . the company has established annually 30000 tons and 40000tons production lines and invited many experts and professors as technical adviser in colleges and science research institute
的质量方针，引进中国建筑材料科学研究院uea h高效砼膨胀剂及fdn萘系减水剂专利技术，分别建成年产5万吨和6千吨的生产线，并聘请高等院校和科研单位的多位专家教授作为技术顾问。 |
| 9. | From the beginning of the establishment , insisting on the business idea of " talents base , science superior , quality first , credit paramountcy " and quality principle of " relying on science and technology , strict management , good quality , satisfied services " , the company has imported the patents of uea - h high performance expansion agent and fdn
地处重庆市北碚区三圣镇，是混凝土外加剂及特种建筑材料专业生产公司。我公司自成立之初就本着“人才为本科技为先质量第一信誉至上”的经营理念，坚持“依靠科技管理上乘品质优异服务满意” |
| 10. | This paper mainly deals with the effect of hydrosoluble hp fibre , fibremesh and fdn on cement mortar ' s bend resistant strength and compressive strength under the same operating conditions and with different hp mixtures ; comparing fibremesh to hp , both of which have different effects on concrete ' s compressive strength , tensile strength and bend resistant strength ; and finally discussing hp ' s mechanism
本文主要研究了工作性相同、 hp掺量不同时水溶性高分子纤维( hp ) 、纤维网、 fdn高效减水剂对水泥砂浆抗折强度、抗压强度的影响。同时对纤维网和hp增强混凝土的抗压强度、劈裂强度、抗弯强度作了对比分析。最后对hp的作用机理进行了研究。 |
