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non    
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    This paper introduced standard GB 17268—1998"Non refillable steel welded cylinder for industry cylinder"and main different item among GB 17268—1998,DOT-39,EN12205.Compared and analysed among GB 17268 、DOT-39、EN12205 on thespecified range,materials,manufacturing and model test requirements,and some suggestion about the correction of standard GB 17268 were put forward.
    简要介绍了GB 17268—1998《工业用重复充装焊接钢瓶》标准及DOT 39、EN 12205与GB17268标准的主要不同条款。 对GB 17268、DOT 39、EN 12205标准的适用范围、原材料、制造和型式试验要求等方面作出了比较分析,提出了GB 17268标准修改的一些建议。
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    Feature Information Model Foundation of Non gyrorotor Components
    回转体零件特征信息模型的建立
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    Technical Problems and Countermeasures of Non Quenched and Tempered Steel in Industrial Application
    珠光体型调质钢存在的问题及对策
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    Non iterative method for designing crank rocker mechanism according to allowable transmission angle
    按许用传动角设计曲柄摇杆机构的迭代方法
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    Bond graph for dynamic analysis of static force of planar linkage in non inertial
    惯性系下平面连杆机构动态静力分析的键合图
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    LW- 10/7 Non oil Lubricated Air Compressor
    LW—10/7型油润滑空气压缩机
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    The Application of Non Diffracting Beam in a Straightness Error Measuring System
    衍射光在直线度误差测量系统中的应用
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    Non\|Ledeburite Super Hardness High Toughness \=High Speed Steel M2Si
    莱氏体超硬高韧高速钢M2Si
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    Non\|Check Method for Designing Crank Rocker Mechanism
    曲柄摇杆机构的校核设计法
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    Computer Aided Design of a Non clogging Double Channel Impeller
    堵塞双流道式叶轮的CAD设计
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  非线性
    Analysis of Geometrical Non Linearity for Bar Structures Under Tesion and compression
    拉压杆系结构的几何非线性分析与应用
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    Non linear Elements Position Identification in a Complex Structure
    复杂结构中非线性元件位置判定
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    Analysis on the non linear vibration of multiparallet rotor system
    多平行轴转子系统非线性振动特性分析
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    A Study of Linear and Non linear Dynamic Performance for Tilting-Pad Thrust Bearing
    可倾瓦推力轴承的线性和非线性动特性研究
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    The research for machining of high precision non linear cam curve
    高精度非线性凸轮曲线的加工研究
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    The Design and Technical Conditions of Non undercutting for Involute Gear
    渐开线齿轮发生根切的设计与工艺条件
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    NON EQUILIBRIUM SEGREGATION OF MANGANESE AND ALLOYING ELEMENTS IN Mn CRYOGENIC STEELS
    锰低温钢中锰及合金元素的平衡偏聚
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    It was found that the acid soluble aluminum content in the spring steel does not influence the austenite grain size of spring steel rods, but it has an obvious influence on the size distribution of non metallic inclusions in hot rolled spring steel rods, further influencing the fatigue property of high strength spring steel.
    研究发现 ,钢中酸溶铝含量的高低并影响弹簧钢的奥氏体晶粒度 ,但明显影响钢材中的非金属夹杂物尺寸分布 ,从而影响高强度弹簧钢的疲劳性能。
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    In addition, for the case when system state is getting to the sliding mode the control plane is non robustness, a fuzzy sliding modevariable structure control is proposed, which introduces fuzyy logic and whole sliding mode variable structure control theory into the controller design.
    除此之外,针对滑模变结构控制在趋近阶段具有鲁棒性,将模糊逻辑和全局滑模变结构策略引入到滑模变结构控制方法中,提出了一种基于滤波的模糊滑模变结构控制方法。
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    The phenomenal theory of martensite crystallography (PTMC) was applied to examine the surface relief angle obtained by AFM and agreeable results of martensite are available, however, the results of bainite are different from PTMC, indicating a non shear mechanism of bainite.
    在此基础上,将AFM的测量结果与马氏体相变表象理论(PTMC)进行了对比,发现马氏体浮突角与PTMC理论相符合,而贝氏体浮突角与PTMC理论符合,说明贝氏体相变机制与马氏体同,可能是切变机制;
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The method applies to the standard arithmetic subgroups ofSO(n,1) (a case which was proved previously by Millson [Mi]), to the non-arithmetic lattices inSO(n,1) constructed by Gromov and Piatetski-Shapiro [GPS] and to groups generated by reflections.
      
We also show how to distinguish examples of open subsets with a good quotient coming from Mumford's theory and give examples of open subsets with non-quasi-projective quotients.
      
An algebraicG-varietyX is called "wonderful", if the following conditions are satisfied:X is (connected) smooth and complete;X containsr irreducible smoothG-invariant divisors having a non void transversal intersection;G has 2r orbits inX.
      
Lichtenstein in the caseu =(n, ?) or(n?), we prove that ?(q).ζ1/2 is non zero for all harmonic polynomialsq ∈S() \ {0}.
      
In [Ka1] its geometric counterpart was applied to construct contractible smooth affine varieties non-isomorphic to Euclidean spaces.
      
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The ball caged constant angular velocity universal joint with dividing rod is used in the front driving axle of tractors and automobiles. The angular velocity non-homogeneity of the universal joint depends upon the parameters of dividing rod. Presently no literature states how to determine the optimized parameters theoretically. The existing method is to give these parametersa, b. m a series of ratios, such as m/a, m/b, experiments, are made according to these ratios and the experimental results are described...

The ball caged constant angular velocity universal joint with dividing rod is used in the front driving axle of tractors and automobiles. The angular velocity non-homogeneity of the universal joint depends upon the parameters of dividing rod. Presently no literature states how to determine the optimized parameters theoretically. The existing method is to give these parametersa, b. m a series of ratios, such as m/a, m/b, experiments, are made according to these ratios and the experimental results are described in curves. The method mentional above lacks theoretical basis.Now we have sdved the problem with the theory of approximation in this paper. It also deduces the satisfying relations between these parameters.

拖拉机,汽车在前驱动桥中采用的带分度杆的球笼式等角速的万向节,其分度杆参数对万向节的转速不均匀性起着决定性的作用。目前国内外资料仅限于给定这些参数a、b、m间一系列比值m/a、b/a,根据给定比值进行实验,将结果绘成特性曲线,但最佳参数a、b、m如何确定缺乏理论根据。 本文用函数的逼近解决了这个问题,并导出这些参数间应满足的关系。

Some typical applications of δ-function in machine-building are given with explanation. The significance of δ-function for the analysis of mechanical systems, the application of δ-function to establish the relations between periodic function spectrum analysis and non-periodic function spectrum analysis, distributed and concentrated quantities, continuous and discontinuous quantities as well as process excitement and initial excitement are discussed.

本文从物理本质出发,归纳了δ函数在机械制造中某些较为典型的应用,并给出了若干理论解释。同时,进一步阐述了δ函数对于机械系统分析的意义,指出这一概念的引用沟通了周期函数的频谱分析与非周期函数的频谱分析、分布量与集中量、连续量与间断量以及过程激励与初始激励之间的联系。

The ball rotor, as an arming and safety device has found wide applications in the fuzes for small caliber projectiles used in antiaircraft, aircraft mounted and ship-based guns as well as for recoilless gun projectiles. Its main advantages are simple in structure, easy to manufacture and small in volume. By means of this device we can get an arming delay if the rotational speed of projectiles is low (e. g. ω≈9000rpm). The problem of arming delay may be easily solved if the ball rotor device is combined with...

The ball rotor, as an arming and safety device has found wide applications in the fuzes for small caliber projectiles used in antiaircraft, aircraft mounted and ship-based guns as well as for recoilless gun projectiles. Its main advantages are simple in structure, easy to manufacture and small in volume. By means of this device we can get an arming delay if the rotational speed of projectiles is low (e. g. ω≈9000rpm). The problem of arming delay may be easily solved if the ball rotor device is combined with a mechanism in which the safety part is made of meltable alloy (e. g. the fuze for small caliber antiaircraft guns). It is the centrifugal moment that causes the ball rotor to rotate, so that it is only used in fuzes for spin projectiles whose rotational speed is about 9000—50000rpm. The reliability of the function of the ball rotor and the calculations of its arming time are based on the theoretical analysis of its movement. This paper makes a theoretical analysis of the movement of the ball rotor by means of two non-inertial coordinated systems and introduces the differential equations of the movement of the ball rotor and the calculations of its starting time. Finaly, the deviation of the centre of the ball rotor from the axis of the projectiles is discussed.

在小口径高炮、航炮、舰炮以及无座力炮引信中,球转子隔离机构应用相当广泛。它的主要优点是:结构简单、易于制造、体积小;当弹丸转速较低时(例如ω≈9000rpm),应用此种机构可以得到炮口保险。如果与易熔合金保险机构联用(例如小高炮榴弹用引信)则可顺利解决炮口保险问题。球转子是在离心力矩作用下转正的,因此它只用于旋转弹引信,其角速度ω≈9000~50000rpm。球转子的作用可靠性问题、转正时间的计算问题都是以球转子的理论分析为依据的。本文应用两种非惯性坐标系对球转子的运动进行理论分析,导出球转子的运动微分方程组以及起动时间的计算公式。最后对球心偏离弹轴的更为复杂的情况进行分析讨论。

 
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