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基准     
相关语句
  reference
    Total Differential Calculation of Reference Errors
    基准不符误差的全微分计算法
短句来源
    The Analysis of the Offcenter Error of Installing Reference Ball
    基准球安装偏心误差的分析
短句来源
    The analysis, experiment and application of new filler material of RFPE (Reference Free Part Encapsulation) technique is introduced.
    介绍了无基准零件封装(Reference Free Part Encapsulation—RFPE)夹具中的填充材料研究、试验和应用情况。
    Bottleneck, Tactics and Technique in Industrialization of Reference Free Part Encapsulation Fixture
    基准自由的零件封装夹具及其工业化瓶颈、策略与技术
短句来源
    Development and Application for Reference Free Part Encapsulation Fixturing
    无基准工件封装夹具的发展与应用
短句来源
更多       
  datum
    On the principle of measuring kinematic errors of a moving table using two laser beams as a plane datum
    以激光束为基准测量工作台直线运动误差的原理探讨
短句来源
    The Research of Featurebased Geometric Tolerance Solid Model (二)——the Datum Coordinate System and Tolerance Constraint Topology Graph Based on GTSB Representation in CAD/CAM
    基于特征的几何公差实体模型的研究(二)—— CAD/CAAM 中基于 GTSB 表示的基准坐标及公差约束拓扑图
短句来源
    A Method of Estimating Coefficient about the Error of Datum
    基准位置误差系数估算法
短句来源
    Ideal Datum in the Datum Displacement Error Calculation
    基准位移误差计算中的理想位置
短句来源
    Analysis on Method Establishing High Accuracy Datum Plane
    高精度基准平面建立方法分析
短句来源
更多       
  benchmark
    Study of the Applications of the Benchmark System to the Stamping Dies for the Auto Body
    车身冲模基准体系的应用研究
短句来源
    During the measurement of blade by coordinate measuring machine, the benchmark of design and measuring is not the same, so it is necessary to transfer the measuring model to the CAD model for comparison.
    在三坐标测量机的测量中,由于叶片的测量基准与设计基准不一致,测量坐标系统与设计坐标系统之间必须经过转换,即叶片的测量模型和CAD模型的基准必须一致,才能够比较测量数据,因此叶片的定位校准必不可少。
短句来源
    A Instrument for Measuring Symmetry of Keyway in the Hole Based on Benchmark Changing
    基于基准互换的孔内键槽对称度检测量具
短句来源
    Study of Employing Air Film's Character of Averaging Flatness Error to Improve the Precision of Measuring Benchmark
    利用气浮均化技术提高测量基准精度的研究
短句来源
    The benchmark contains the error.
    因此,在形位误差测量中,基准件的精度高低直接影响着测量的结果。
短句来源
更多       
  base
    THE BASE IN MACHINING REVOLVING TOOLS
    有关回转刀具的加工基准问题
短句来源
    According to feather element tree, the base level and base coordinate system are created, then we can choose them when we need them at any time.
    根据特征元素树创建了基准面和基准坐标系,使我们很方便的在需要参照基准的时候来选取它。
短句来源
    Developing process and program frame are analyzed. (2) According to the actual developing experience, five modeling principles of CNC machine tools part based on Pro/E----whole modeling principle, the same reference base principle, symmetry modeling principle, bepainting principle and confining the size of file principle are summarized.
    (2) 根据实际开发经验总结了基于Pro/E的数控机床部件的五个建模原则——整体建模原则、相同参考基准原则、对称建模原则、着色原则、限定文件大小原则,提高了Java 3D中导入模型的建模效率。
短句来源
    To measure a cam, we must unify the designing and measuring base of a cam lift, and then use the“minimum condition”method to confirm the center line of a cam.
    凸轮测量必须解决设计基准与测量基准的统一问题,否则凸轮设计基准相对于测量安装基准的偏心和凸轮轴的弯曲都进入了测量结果,从而引入较大的测量误差。
短句来源
    When a cam is measured, if the designing and measuring base of cam lift having not been unified, the offset of designing and fixing base would be added to the measuring result, a bigger system error would be brought to the cam lift.
    凸轮升程测量的关键点是确定凸轮中心线。 常用的确定凸轮中心线的方法如“敏感点”法、“最高点”法和“敏感段”法等方法都不能实现测量基准与设计基准的统一,而且不能满足最小条件要求,会给凸轮升程测量带来较大的系统误差。
短句来源
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  reference
The authors extend and improve some known results, and show that there are some errors in reference on inequalities for sequence rearrangement by examples.
      
The blank reference experiment shows that hydrothermal crystallization treatment favors the formation of hexagonal tungsten trioxide, and the tungsten trioxide powder sample prepared by this method has a high degree of crystallinity.
      
This paper provides a reference on calculating the binding-site number in proteins for ligands and studying their interactions by fluorescence spectroscopic methods.
      
The proposed algorithm can easily identify which sector the reference space vector falls in and conduct simple operations to find the duty cycle of each vector.
      
The similar parts in MANET routing protocol are used in the satellite network for reference.
      
更多          
  datum
We use this approach together with the new datum in order to investigate its implications for the baryon spectrum.
      
The Vallesian lower boundary and "Hipparion-datum" are estimated as ranging in age from 11.2 to 10.7 Ma in Central to Western Europe and Western Asia.
      
The geometrical accuracy of a machined feature on a workpiece during machining processes is mainly affected by the kinematic chain errors of multi-axis CNC machines and robots, locating precision of fixtures, and datum errors on the workpiece.
      
A mapping model between the displacements of workpieces and the datum errors, and adjustments of fixtures is established.
      
The life-test datum with an accumulative count about 1011 is obtained; the structure and composition of active surface of fatigued CEM are analyzed by using AES.
      
更多          
  benchmark
The numerical simulations on several benchmark problems show that the scheme is very efficient.
      
The test by some benchmark problems shows that the proposed algorithm achieves relatively higher performance.
      
Experimental results for MCNC benchmark circuits are given.
      
All this is supported by the experimental study on benchmark circuits.
      
The experimental results with the adaptive control on the "Helicopter" benchmark were described.
      
更多          
  base
Geometric construction of the global base of the quantum modified algebra of
      
However the compatibility of the canonical base of the modified algebra and of the geometric base given by intersection cohomology sheaves on the affine flag variety was never proved.
      
We prove that these determinantal semi-invariants span the space of all semi-invariants for any quiver and any infinite base field.
      
For $\gamma\in\mathbb{R}$ let $C(\gamma)$ be the set of all $f\in{\mathcal S}^\prime$ for which$\sum_{n=0}^{\infty}\,|(f,h_n)|\,(n+1)^{\gamma}>amp;lt;\infty$, where $(h_n)_{n=0,1,\dots}$ is the orthonormal base of Hermite functions.
      
A gene regulatory mechanism has been proposed in which steroid hormones and certain other drugs bind to nuclear receptor proteins followed by transfer to DNA where they are inserted between base pairs.
      
更多          
  其他


In the past the study on the collective control of the reeling thread troubles was carried out on the assumption that the technical standard of the reelers is the same. In this article it is assumed that the technical standard of the reelers in the collective control group is different from one another. Hence it brings forth a new theory for the collective control. By this theory the standard of the reelers of the collective control group was investigated. Through this investigation it is quite obvious that...

In the past the study on the collective control of the reeling thread troubles was carried out on the assumption that the technical standard of the reelers is the same. In this article it is assumed that the technical standard of the reelers in the collective control group is different from one another. Hence it brings forth a new theory for the collective control. By this theory the standard of the reelers of the collective control group was investigated. Through this investigation it is quite obvious that in organizing a collective control group a tangible result can be obtained by making those who are good at the job and those who are inferior cooperate with one another to deal with the troubles.During investigation an electronic computer is used to make analogous experiments in order to establish an assumption and at the same time to check the reliability of the theory.

过去关于丝故障的集团管理问题的研究,是在缫丝工技术水平相同的假定下进行的.本文假定集团管理中缫丝工的技术水平各不相同,由此导出新的集团管理理论.利用这个理论,探讨了管理人员的组合基准.结果说明,在组织集团管理时,使操作技术好的工人与操作技术差的工人配合进行故障管理可收到明显的效果.研究过程中曾利用电子计算机进行模拟实验来建立假定并检验理论的可靠性.

This paper states the investigations conducted by applying the theory of J-integralto the cases in which residual stresses exist.An effective value of J is adoptedas an index symbolizing the fracture criterion.It appears asExperimental results indicated that the values of fracture load derived theoreticallyfrom the above relation were in agreement with those obtained in actual tests forsamples in which residual stresses or preloads exist.

本文用J积分的理论对存在残余应力场合的情况进行了研究。提出了一个有效的J 值作为断裂基准的判据,即Jc=J 有效。实验证明,对有残余应力或预载荷存在的试样,由上述理论推导的断裂载荷与实际试验的结果是相符合的。

In order to energy saveing, Hot Strip Rolling Plant has been improving the computer control and mathematics model of heating furnace. The results of improvement show that comsuption of black oii per ton slab decreased 24.3kg.This article will introduce the improvment in detail, including taking slab out of furnace adopting different temperature for different heating furnace; improving the temperature model of taking slab out; choosing and using several standard of furnace temperature; turning the data of shortest...

In order to energy saveing, Hot Strip Rolling Plant has been improving the computer control and mathematics model of heating furnace. The results of improvement show that comsuption of black oii per ton slab decreased 24.3kg.This article will introduce the improvment in detail, including taking slab out of furnace adopting different temperature for different heating furnace; improving the temperature model of taking slab out; choosing and using several standard of furnace temperature; turning the data of shortest time in furnace into model and control by computer, etc.The improvement in heating furnace is not only important to energy saving but also provided actural experiences of reformation to same sort of factories.

武钢热轧厂为了节约能源,对引进的板坯加热炉计算机控制工艺与数学模型进行了改造,使板坯吨钢重油消耗由75kg下降到50.7kg,82年以来,持续稳定控制在50kg以下,在年产量和作业率尚未达到设计指标的情况下,重油单耗首先达到了设计水平,两年来节约了大量重油能源。改造项目包括:把各加热炉按统一的抽出目标温度进行抽钢控制,改为按保证统一的轧制温度决定的不同的加热炉出炉板坯的不同目标温度控制抽钢;在保证设备安全和满足轧制工艺要求的前提下,改造目标抽出温度模型,适当降低抽钢温度;开发多种基准炉温制度,根据生产情况自动选择使用的炉温控制新方法;开发板坯最小在炉时间计算设定模型化,自动由计算机进行计算设定等。上述改造,是武钢热轧厂本阶段取得的节能成绩的重要措施,也为同类工厂的设计和改造提供了经验。

 
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