平面度

The detailed processing and analysis of the experimental results indicate that the color discrimination characteristics of human eyes are different for individual color regions and directions in the a*-b* plane,and namely the CIE1976 a*-b* plane is visually non-uniform. The visual color tolerance in the third and fourth quadrants is smaller than the first and second quadrants, the biggest tolerance is in the region of high chroma orange, and the smallest is in blue.

通过对实验数据的详细处理和分析表明，等明度a*-b*平面非视觉均匀，人眼对一、二象限的色宽容度普遍高于三、四象限的色宽容度，对高彩度的橙色具有最高的宽容度，对蓝色具有最低的宽容度，所有的颜色在红-绿方向的视觉色差尺度均低于黄-蓝方向。

On the basis of the above, the author discusses in detail the calculational method of reliability of frame structure failure-dependent engineering system t...

在此基础上，针对钢筋混凝土平面框架体系可靠度计算分析中的问题，重点阐述了可简化为剪切层模型的框架结构失效相关的工程系统的可靠度计算方法，提出了修正计算列式。

An object with a flat surface and canted at an angle of 45° to the transducer axis refracts the ultrasonic pulse in an angle of 90°.

一个平面物体，然后在45度角斜轴传感器折射成90度角的超声脉冲。

Seepage mechanism is applied to deduce two kinds of osmotic grouting model (plane radial flow and ball-type centripetal flow). Security grade basic working condition and reliability index of grouting on sand-fixed is proposed. And formulize reliability analysis of grouting on sand-fixed combining engineering cases. 4. The mechanism of sand-fixed of grouting engineering and sand-fixed of biological engineering is described.

运用渗流力学对平面径向流、球形向心流两种渗透性注浆模型进行了推导，将可靠度理论引入注浆工程，提出了固砂注浆的安全等级、基本工作状态以及相应可靠度指标，并结合工程实例，对固砂注浆工程的可靠性分析过程进行了阐述。

Upper central incisors moved forward and downward together with maxillary, at the same time they upright in the sagittal plane and tip mesially. 3 The occlusion plane rotated clockwise for about 1.5°. 4 The width increasement effect of RME comes from approximately the equal amounts of skeletal and dental expansion. The mode of dental movement was a combination of body and tipping movements of posterior teeth.

结果：1后牙在宽度方向上为整体移动和倾斜移动相结合的移动方式，但第一磨牙和第一双尖牙稍有差别；牙齿和骨对宽度增加的贡献各占约1/2；2后牙在垂直方向有伸长的趋势；3第一磨牙和第一双尖牙均向前整体移动，轴倾度保持不变；4中切牙整体随上颌骨前部向前向下移动，其牙长轴发生直立，轴倾度增加；5上颌平面发生顺时针旋转。

On the basis of analysis of different kinds of reservoir petrologic feature, porosity, rate of percolation, we can conclude that the reservoir physical characterization in most cases controlled by depositional facies.

通过对不同成因类型储层的岩石学特征、孔隙度和渗透率等方面的分析研究认为，沉积环境、沉积微相与储层砂体物性之间有直接的关系。孔隙度、渗透率在平面上的分布在很大程度上受控于沉积环境和沉积微相。

Jb-2c roughometer, is specially used to evaluate surface roughness of internal and external roll paths of bearings .it can also be used to measure the roughness of parts in forms of plane, sphere and of small size.

仪器用以评定轴承内外圈滚道表面粗糙度。仪器也可测量平面、斜面、球面、外圆柱面、内孔表面、深槽表面，圆弧面及微小零件的粗糙度，所以在机械、模具等行业中广泛使用。

This approach encrypts digital image hy permuting on bitmap after pretreatment,and decryption pixels＇ values of the image which is attacked by shear transformation is computed by using neighboring pixels＇ values,it can protect the encryption image from shear transformation attack.A binary sequence nonlinear generating method based on chaotic system is also presented.

基于数字图像灰度矩阵位平面进行置乱加密，在恢复过程中通过象素邻域灰度信息进行恢复，能够有效抵御针对加密图像的剪切变换攻击，同时给出了一种非线性的、应用高维混沌系统产生二值序列的方法。

We reproduced the Munsell chips whose hues are 5R, 5YR, 5Y, 5GY,5G, 5BG, 5B, 5PB, 5P,5PR and values are 3, 5, 7, and chromas are 2, 4, 6, 10 using the sublimate printer. We then calculated the color differences ΔEab between the reproduced chips and the standard chips.

而Munsell色票为目前工业设计及平面设计等各行各业最常用的色票，因此我们以Munsell 色票中的十个主色相、彩度C=2，4，6，10、明度V=3，5，7的色票为本研究的标准色样，用热升华式印表机进行色彩复制，再计算出复制色票与标准色票的CIELab色差，以探讨热升华印表机复制Munsell色票的可行性。

XD-2003 strap machine is changed from XD-2002 machine which has a cast aluminium on the bed,making the screw,screwtube and speed reducer keeping concentric.the V-model manger on the bed is lower than the flat on which the speed reducer is fixed,the components are finished machining by machine tool.guaranteeing perpendicularity, degree of balance.speed reducer,screw and screwtube is fixed on the base,and the screwtube is in the mini-manger,then ensuring axis keeping concentric with sheath,screwtube feed opening has a chromium hard-wearing sheath,which can improve the lifetime of the screw and screwtube to threefold or to fourfold.

XD-2003 型塑料打包带机组，是在XD-2002型机组的机座上安装了一个铸铁机座，使螺杆，螺筒和减速机保持同心，座上的V型槽比安装减速机的平面低，其部件都是经过机床精加工完成的，保证了垂直度和平衡度。减速机和螺杆、螺筒置于底座上，且螺筒卡在微型槽内。确保轴与套保持同心，螺筒下料口处设有高铬耐磨衬套，这样可使螺杆、螺筒的寿命提高3-4倍。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。