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fre

  • n.频率;倍频器
frefre
  1. Fre & The size of your memory free list .

    fre&内存空闲列表的大小。

  2. Numerical Simulation and fRe 's Correlation for Fully Developed Flow of Power Law Fluid Through a Rectangular Duct

    幂律流体在矩形通道中充分发展流动的数值模拟及阻力计算

  3. The non-dimensional velocity slip and the resistance coefficient fRe decrease with the growth of Kn .

    无量纲滑移长度随Kn的增大而减小,阻力系数fRe随Kn减小。

  4. The system may measure many circuits high - frequency alternating current , direct current , fre - quency , efficiency of inverter .

    系统测试项目有多路高频交流电流,直流电流,频率,逆变器的效率等。

  5. New collective states with mixed-symmetry character of neutron-proton degrees of fre - edom is reviewed .

    本文讨论了具有中子质子自由度混合对称特征的新型集体态-混合对称态。

  6. Three-dimensional structures of meristematic cells of Allium cepa were studied using fre - eze-fracture method under the scanning electron microscope .

    用冷冻断裂法在扫描电镜下研究了洋葱(Alliumcepa)根端分生组织细胞内部的三维结构。

  7. Five six-way signal combiners cover the fre - quency range from 1 to 18 GHz .

    单个器件的工作频带为一个倍频程,五个覆盖频率范围1~18GHz。

  8. If you liked this page , please feel fre to give it a thumbs up , I 'd be hugely appreciative .

    如果您喜欢这个页面,请觉得频率给它一个大拇指,我愿意非常赞赏。

  9. According to the characteristic of Radio Fre - quency Identification ( RFID ), the paper studies the appli - cation of RFID in drug safety management .

    本文针对无线射频识别技术(RFID)的特点,研究RFID在药品安全管理中的应用。

  10. In this method , the rotating angular velocity of the " virtual armature magnetic flux " is taken as the dynamic fre - quency of the node .

    此方法构想了一种虚拟电机,以它的电枢磁势的旋转角速度作为节点的动态频率。

  11. Based on an investigation of existing methods for estimating fre - quency response functions ( FRF ) at home and abroad , two methods are ad - vanced .

    论文在分析研究国际上各种频响函数估计方法的基础上,提出了两种改进的估计方法。

  12. Methods The ultrastucture of muscles in 9 patients with DMD / BMD was observed under electronic microscopy using ultrathin section and fre eze-etching technique .

    方法应用电子显微镜,采用超薄切片和冷冻蚀刻技术观察9例DMD/BMD患者超微结构的改变。

  13. This paper describes the scheme , technical specification require - ments and measured results of the microwave transponders with single fre - quency conversion for china domestic communication satellite .

    本文介绍中国国内通信广播卫星的微波直通式转发器方案、技术指标要求和实测结果。

  14. Is it in the legacy of all the Fre " nch rulers whoworked to beautify their beloved city ?

    是在历任的法国统治者美化他们所钟爱的城市所留下的传统里?

  15. By comparison we can found the first few order fre - quency values of compartment and the frequency of the latter three have large difference . It does not lead to resonance phenomena .

    通过对比发现车厢的前几阶频率值与后三者的频率相差较大,不会引发共振现象。

  16. The reason that is probably happening is because your free list ( fre ) is probably lower then the threshold for minfree , which you had given it using vmo .

    其原因可能因为您的空闲列表(fre)比minfree的阈值(使用vmo进行设定的)要低一些。

  17. Functional logger is introduced to linear polarization of least magnitude and ultra-low fre - quency potential square-wave and , according to its characteristics , corrosion rate of Zn coating is determined .

    将函数记录仪引入至小幅值、超低频电位方波线性极化法中,并依据其特点,测定了锌镀层的腐蚀速率。

  18. Now , the study of this antenna is only about the frequency range above 1G , but little about the ultra-high fre - quency ( 300M-1G ) .

    目前对于这种结构天线的分析研究只局限于1G以上的频段,在超高频(300M-1G)还鲜有涉及。

  19. In this paper a new method for dynamic analysis of vehicle-bridge system & Fre - quency Spectral Analysis of Vehicle-Bridge System ( FSAVB ), is presented to provide an approach for the complicated problem of vehicle-bridge interaction .

    本文提出了一个研究车桥系统振动的新方法&车桥系统频谱分析法,为车桥相互作用这一复杂问题的理论分析提供了一个新的研究途径。

  20. After doubling the frequency of noise-polluted signal , the bandwidth of AM noise is often extended by a factor of N ( N-number of doubling fre - quency ) .

    这种被噪声污染了的信号倍频后,通常调幅噪声的频宽扩大N倍(N为倍频次数);

  21. On the background of normal radio frequency identification system , this paper introduces Frequency Hopping Spread Spectrum and adaptive fre - quency hopping in grouping interrogators which can decrease fixed frequency interference and increase ratio of identification .

    论文以一般的射频识别系统为背景,通过引入扩谱跳频和自适应跳频组网,减小固定频率干扰的影响,提高射频识别率。

  22. Such continuous current of FER increase give our country gigantic impact , and many scholars whether at home or oversea also have a great interest in moderate FRE lever that to study have become a hotspot at science circles .

    持续增加的外汇储备对我国经济已经产生了巨大的冲击,国内外学者对我国外汇储备规模的研究已成为当前学术界的一个热点。

  23. The change of dye laser-beam-direction is investigated by means of a designed interferometer and servo-system . Its automatic compensation is carried out thus improving the frequency stabilization of the fre quency stabilized dye laser .

    利用设计的干涉仪及控制系统研究染料激光的光束方向变化,并对它进行补偿,从而改善稳频染料激光器的频率稳定性。

  24. The downlink performance of orthogonal frequency division multiplexing ( OFDM ) fre - ( quency ) hopping system with time-frequency mapping patterns derived from Costas sequence was analyzed in a multi-cell multi-user scenario .

    分析了多小区多用户环境下,采用Costas序列构建时间-频率映射模式的正交频分复用(OFDM)跳频系统下行方向上的性能。

  25. An all solid state broadly tunable high-a ve rage-power laser source based on the Ti ∶ sapphire crystal pumped by a fre quency-doubled laser diode pumped Nd ∶ YAG laser is reported in this paper .

    介绍了以激光二极管抽运Nd∶YAG晶体的倍频激光器为抽运源,高平均功率准连续运转的全固态宽调谐掺钛蓝宝石(Ti∶sapphire)激光器。

  26. This paper introduces the insulation structure and property of stator-rotor on variable fre ˉ quency speed control synchronous motor for large steel-mill motor . The insulation structure of rotor is most advanced in the world , realize insulation material internal purchase .

    本文介绍了大型轧钢用变频调速同步电机的定转子绝缘结构和性能,其转子绝缘采用世界上最先进的绝缘结构,并实现了绝缘材料的国产化。

  27. Within the , fre - quency range ( DC-180MHz ), the maximum of VSWR was decreased from 1.198 to 1.088 . This system could count the strength of field accurately only using a directional coupler and a power meter .

    在180MHz工作频率范围内,最大驻波由1.198降低到1.088。由低驻波的横电磁波传输室组成的测试系统只用一个单定向耦合器和一台功率计即可精确计算出高频场强值。

  28. The stability of a electric system can be effected by the real the false power impact caused by the fre - quent start-up and stop-down of a large synchronous motor in a large electric pumping station for irrigation and drainage .

    大型电力排灌泵站中大型同步电动机的频繁起动和停机引起的实功和虚功冲击会影响电力系统的稳定性。

  29. This article uses the size of document , the access frequency and the remain life of access document as the keyword of documents calculating value . The replacement strategy which has been improved has a more accurate calculation to access fre - quency .

    使用文档大小、访问频率、文档访问剩余寿命作为计算文档价值的关键词,在提出的替换策略上,对文档的访问频率作一个更精确的计算。

  30. Two sets of the laser system , working on pumping frequency and probing frequency respectively , are installed together with a cesium beam tube and a frequency control electronics set , forming a set of optically pumped cesium beam fre - quency standard .

    两套激光系统分别工作在抽运跃迁频率和检测跃迁频率上,与小型密封铯束管及频标电路共同组装成一台光抽运铯束频标。