| 1. | All iron can be eliminated when constructing a rotor with hts windings 当使用高温超导线圈制作转子后,所有的铁损耗几乎可以忽略。 |
| 2. | The ink contains iron , and traces of iron can be made to reveal themselves when bombarded with x - rays 墨水中含铁,而微量的铁会在x射线的轰击下显露它们的踪迹。 |
| 3. | The ink contains iron , and traces of iron can be made to reveal themselves when bombarded with x - rays 墨水含有铁,在x射线的不断冲击下,铁的痕迹能被揭露出来。 |
| 4. | Mother gently puffed the dust away off the flowers and put them into an iron can one by one 母亲说,待喝绿茶时,放上一两朵,那比买来的茉莉花茶的味道更自然,更纯正。 |
| 5. | A hexagonal crystal , one of the three known structures iron can take , is different from the cubic crystalline structures iron takes at the planet ' s surface 六边形的水晶,能够得到的熟知的三结构铁,不同于从地球表面获得的立方体水晶的结构铁。 |
| 6. | It is indicated that the dredge pump abrasion resistance parts produced by high - chromium cast iron can meet the demands of design , and its properties may reach the level of products abroad 试制结果证明,使用高铬铸铁生产的泥泵过流耐磨部件符合设计要求,性能达到国外同类产品水平。 |
| 7. | People who became obsessed with exercise and spend hours and hours very day running or pumping iron can generally do so only at the great expense of creating a serious imbalance elsewhere in their lives 一些人迷于锻炼,每天花很多小时跑步或拉重锻炼,一般说,这样做只会使他们生活中的其他方面出现严重的不平衡。 |
| 8. | The strength of extension of low carbon ductile cast iron can reach 750mpa in casting state , the impact ductility can reach 20j / cm2 . the diameter of graphite nodule is 5 - 20 ( am , the base body is consisted of pearlite - 低碳球铁在铸态下的抗拉强度可达750mpa ,冲击韧性可达20j cm ~ 2 ,其中石墨球直径在5 20 m ,基体以珠光体为主,有少量的铁素体与渗碳体。 |
| 9. | Base on certain main magnets of nmr this thesis designs the most excellent structure of the pole shape and obtains a relatively uniform magnetic field in a large imaging volume . the calculating model of pole shape made of pure iron can be simplified with the infinite permeability and calculated with the scalar potential . the rule between pole shape and the homogeneity or the size of uniform region of magnetic field is discovered and factors of influencing the homogeneity of the magnetic field are held so that the main magnet with the optimized size of pole shape can produce a relatively uniform magnetic field in a large imaging volume 本文针对一类典型结构的主磁体,通过磁场分析与大量的计算,找到了极靴形状的改变影响样品区磁场均匀度以及均匀区域范围的规律,掌握了极靴形状的变化趋势及其形状影响样品区磁场均匀度的各种因素,进行了极靴的形状优化设计并编制了相应的计算机软件,给出了极靴形状的具体尺寸,使得主磁体能在更大空间内产生相对均匀的磁场。 |
| 10. | Abstract : the structure and the properties of the grinding ball made of the composite cast iron have been researched in this paper . the result indicates that added trace boron and a proper quantity copper to this kind of composite cast iron can increase its quench - hardening ability , and raise its hardness and impact toughness 文摘:研究了一种复合铸铁磨球的组织和性能,结果表明,化学成分和淬火工艺对这种复合铸铁磨球的组织和性能有很大影响,微量的硼和适量的铜可以明显地提高磨球的淬透性,经过余热淬火得到贝氏体或马氏体基体组织,从而提高磨球的硬度和冲击韧性。 |