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In this paper,for the terminal velocity v of a spheric water drop(with a radius r)falling inthe fluid medium,an analytical solution v=α(b/a)(/r){(+β(a/b~)r~ )~(/)-} is theoreticallyderived. |
中文意思: 本文从理论上推导了流体介质中球体降速 v 随其半径 r 的变化形式 v=α(b/a)(/r){(+β(a/b~)r~ )~(/)-}。 |
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In this paper,We analyse the logical organization of head sector,root di-rectory,file allocation table and diskette,in order to study the method for reading diskfiles at the base of BIOS by following the tracks of FAT.
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本文通过对引导扇区、根目录、文件分配表、磁盘的逻辑结构的分析,讲述如何在BIOS一层上通过跟踪FAT读取磁盘文件信息的全过程。 |
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In this paper,We discuss an optimal cutting prblem
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讨论了En中的超长方体最优切割问题.不仅讨论了最优切割次序,并且讨论了最优切割位置. |
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In this paper,a closed-form of equations are presented,which can predict the speed of the ogival projectile and the penetration depth during the ogival nose penetrating into 0MnCrNiMoB High Strength Low Alloy Steel (HSLAS).
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给出了弧形弹头侵入 0MnCrNiMoB高强低合金钢过程中弹头的侵彻深度与速度的关系式。 |
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In this paper,a speed control system for BLDC motors based on the A 9 SED and AT89C was developed. A 9 SED is a new generation of ASIC of Allegro designed for PWM control of BLDC motors.
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开发了基于电机专用控制模块A 9 SED和AT89C的无刷直流电机的调速系统,A 9 SED是Alle-gro公司推出的新一代无刷直流电机专用控制模块,它可以方便地对无刷直流电机进行PWM控制。 |
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In this paper,electrical transport and magnetic properties of polycrystalline La_(/8-x)Pr_xCa_( /8)MnO_ ((x=0),0.0,0. ,0.) are investigated systematically. Low temperature resistivity minima for La_(/8-x)Pr_xCa_( /8)MnO_ systems are reported.
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系统地研究了多晶La/8-xPrxCa /8MnO (x=0,0.0,0. ,0.)体系的磁性和电输运特性,并报道了这一体系的电阻率极小值行为. |
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In this paper,for the terminal velocity v of a spheric water drop(with a radius r)falling inthe fluid medium,an analytical solution v=α(b/a)(/r){(+β(a/b~)r~ )~(/)-} is theoreticallyderived.
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本文从理论上推导了流体介质中球体降速 v 随其半径 r 的变化形式 v=α(b/a)(/r){(+β(a/b~)r~ )~(/)-}。 |
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In this paper,it is shown that the direct Sulphuric acid method for producing boric acid with some areas ulexite in Tibet. its percent recovery of single circulation is 8.09%. and its purity conform to GB 8-8.
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本文以西藏某地钠用解石矿为原料,利用酸法一步直接制取硼酸产品,硼酸单程收率达8.09%、产品纯度达GB 8-8指标。 |
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In this paper,some results on extremal quasiconformal mappings between hyperbolic Riemann surfaces are extended to the plain surfaceΩ= C^ -E,where E is a closed subset of C^ ,0,,∞∈E.
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文章把双曲黎曼曲面上关于极值拟共形映射的一些结果推广到了平面区域Ω=C^-E上,其中E<^C为闭集,0,,∞∈E。 |
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In this paper,the ADO system and its relationship with C++ Builder,C++ Builder are introduced. Hereby the application of ADO in C++ Builder is approached.
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介绍了 ADO的技术体系和它与 C++Builder的联系、编程工具 Borland C++Builder ,并探讨了ADO技术在 C++Builder上的具体实现。 |
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In this paper,the GC-MS determination of sesamin in sesame oil by CO_ supercritical fliud extraction were studied。
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本文研究CO_超临界萃取芝麻油中芝麻素含量的GC-MS测定。 |
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In this paper,the authors intend to review the main characteristics of the newly proposed IEEE80.e Draft D .0 and IEEE80.. Draft D with their medium access technique, and evaluate their protocol performances in comparisons.
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文中研究了IEEEWLAN和WPAN工作组分别于00年月和00 年月提出的IEEE80.eD .0和IEEE80.. D两种协议标准的工作机制并对两者的性能作出了比较分析。 |
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