查询词典 jointer plane

Utilizing the expression of maximum deviatoric stress yield rule on π plance and the relationship betwen π plane and principal stress this paper deduces and examines the shape and position of maximum deviatoric stress yield rule on π plane and the relation to Mises circle and Tresca hexagon .

利用π平面与主应力空间的关系及最大偏应力屈服准则在π平面上的表达式，推导验证最大偏应力屈服准则在π平面上图形的形状、方位及其与Mises圆和纯拉伸Tresca六边形的关系。

According to the obtained characteristics of focal points and principal planes, using the expressions of focal point, focal plane, focal length, principal point, and principal plane of geodesic lenses, the geometry graphic imaging formation principles of geodesic lenses are developed to get the object-image-relation of geodesic lenses .

利用短程透镜焦点、焦平面、焦距、主点、主平面等的表达式，根据短程透镜在大口径范围内理想聚焦，主平面为以焦点为圆心、以焦距为半径、在原点相切的两个圆弧等性质，推导出了短程透镜物像关系的作图法求取原则。

Using guyed tower middle line insulator string as an object, through analyzing of distance between cross arm and boom guy plumb plane, and projecting insulator string length, angle, conductor wind inclined angle, and sag to boom guy plumb plane, middle line insulator string tracking equations can be established.

以拉线塔中线绝缘子串为分析对象，通过对横担、拉线铅锤面间的距离分析，再将绝缘子的串长、角度，导线风偏角、弧垂投影至拉线铅锤面，在拉线铅锤面建立中线绝缘子串的轨迹方程，以带电体与拉线间的距离为限制条件，从不同角度计算出第1、2、3极限风偏角，取其中的最小值为极限风偏角。

The projection sequence of plane graphs apex and relationship of the sequence and plane faces were discussed.

阐述了空间直线与平面相交，彼此相对位置的不变性，提出并论证了各种位轩直线与平面相交，直线在相邻两投影面上可见性的投影规律。

This paper studies the relations between plane projective correspondence and perspective correspondence and present a necessary and sufficient condition that plane projective correspondence become perspective correspondence.

研究二维射影对应与透视对应的关系，给出二维射影对应是透视对应的充要条件，得到二维射影对应可分解若干次透视对应，进而给出二维射影对应的几何意义。

Several diffrent but mutual-related models of the projective plane in this thesis reveal its structure and imagins its entire form,and had shown the whole nature-one side through the relations of the projective plane and Mobius tie .

本文给出射影平面的几个不同但是互相联系的模型，借以揭示射影平面的结构，想象射影平面的整体形状，并通过射影平面与莫比乌斯带的关系来了解射影平面的一个整体性质———单侧性。

Paralleling to a principle projective plane Full sections, half-sections and partial sectional views all have a single cutting plane.?

用平行于某一基本投影面的平面剖切？前面介绍的全剖视图、半剖视图和局部剖视图都是单一剖切面剖切的图例。

This implies the existence of a polynomially bounded algorithm to find a shortest contractible cycle, a shortest separating cycle, and shortest cycle in an embedded graph in the projective plane and answers the open problems raised by Mohar and Thomassen in the case of projective plane embedded graph.

另一方面，通过定义嵌入图的几何对偶图及其相应的嵌入系统，得到几何对偶图中的可分离圈就对应于原图中的割；反之，若几何对偶图中的割在原图中对应于一个圈，那么该圈一定可分离。

The following values was measured: angle of cusp line between the second and third molar, impact state and depth, distance from Rickett's Xi to distal cusp of third mandibular molar along the occlusal plane, anterior border of ramus to the third mandibular molar, distance from projection of distal contact point of maxillary third molar to intersection of pterygoid vertical on occlusal plane.The change between pre-and post-treatment was calculated and analyzed with SPSS10.0 software package.α angle, Xi-LTM, R-LTM, R-LTM were tested with independent-sample t test, impact state and depth was tested with Chi-square test. Influence of age on the values was also evaluated.

测量治疗前后的第二、第三磨牙牙尖连线角度、阻生状态和深度，Rickett's Xi点到下颌第三磨牙远中尖距离、下颌支前缘到第三磨牙远中尖距离、翼上颌裂切线到上颌第三磨牙后缘的距离及上、下磨牙的前移量，计算治疗前后各变量的差值，采用SPSS10.0软件包进行统计学分析，α角、Xi-LTM、R-LTM、R-LTM用t检验，阻生状态和深度用χ^2检验，比较年龄因素对各指标的影响。

There was a high risk of thin cement mantle in Gruen zones 1,2 and 5 in the anteriorposterior plane and in Gruen zones 8,9 and 12 in the lateral plane.Typical areas of radiolucency were identified in Gruen zones 2～5 and 10～12 in the middledistal of the stem.Voids appeared in Gruen zones 3～5 and 10～12 in the distal of the stem.

结果(1)按Barrack标准，骨水泥质量A级87.1%，B级11.8%，C级1.1%，无D级骨水泥；(2)按Gruen分区，骨水泥鞘厚度 mm区域多见于正位片上1、2、5区和侧位片上8、9、12区；透亮带多位于假体中远端的2～5区和10～12区；气泡影出现在假体远端的3～5区和10～12区。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。