So, that means whenever you have a geometric problem, and you are not told how to choose your coordinates, it's probably wiser to try to center things on the z axis. 这意味着当你有一个几何问题时,而你没有被告知坐标系,聪明人的做法是先选择z轴。
In depicting reaction coordinates it is more customary to plot the free energy on the vertical axis. 在绘画反应坐标图时,较通行的是把自由能画在纵轴上。
A system of coordinates in which a point is located by its distance and direction ( angle) from a fixed point on a reference line ( called the polar axis). 一种用点离基准线上(称极轴)固定点的距离和方向(角度)来表示点位置的坐标系统。
The CNC Hypoid Cutting Machine is a new kind of machine tool, which coordinates all machine movement necessary for gear manufacturing in6 axis of emotion. 螺旋锥齿轮和准双面齿轮数控铣齿机是一种新机床,将齿轮加工所需全部运用用六座标数控来实现。
After images were reconstructed, the coordinates including the distance from the projection point of the lumbar pedicle axis to the midline of back ( x) and to the midline of transverse process ( y) were measured. 重建后测量400个椎弓根的入点坐标(x,y),即椎弓根轴线在椎骨后表面的投影点与后正中线的距离(x)及与横突中线的垂直距离(y)。
According to measuring the coordinates of each span of long span double arched bridge, the arch axis for every span is determined. 通过测量拱腹各点坐标来确定双曲拱桥每孔的拱轴线。
Firstly, the coordinates of suspension points can be obtained by the suspended-cable equations, and then their ordinates are verified by the moment equations on the basis of the assumption that the dead weight of rope sling is evenly distributed along its whole axis. 首先应用悬垂线方程式求出各悬挂点的坐标,然后根据吊索自重沿其轴线全长均匀分布的假定,应用力矩公式修正各点纵坐标。
The paper radically solves a key problem on evaluating the form and position errors in the rectangular coordinates& obtaining the least square center and axis; 本文解决了直角坐标系下形位误差评定时最小二乘圆心与最小二乘轴线的求取问题;
As such, it's imperative to identify the path for finding the proper innovation coordinates on the intersecting axis of world literature and for consolidating and constructing a fresh pattern of global Chinese-language literature. 因此,如何以积极主动的姿态在世界文学的交叉轴上找到自己的创新坐标,整合建构全球华文文学新格局迫在眉捷。
Change of components of inertia tensors in rotation of coordinates and calculation of principal moment of inertia is particularly complicated. MOHR'S CIRCLE AND AXIS MOMENTS OF INERTIA, INERTIAL PRODUCT 其中惯性矩、惯性积的转轴公式以及主惯性轴和主惯性矩的计算尤为复杂,在教学过程中,是学生学习的难点内容之一.莫尔圆与轴转动惯量、惯性积
On the structure of the new coordinate system, the article thinks that the content coordinate and method coordinate are the basic coordinates, which are the orientation axis that decide the basic work of the ideological and political education on the whole society. 新坐标体系的结构关系为:内容坐标和方法坐标是最基本的坐标,是决定全社会面上思想政治教育基础工作的定位轴。
With coordinates on the sphere, a precise expression for the controlling surface is built, which avoids the shortage of the existing ones that the required precision can be reached only while the rotation axis swings slightly. 借助在球面上建立的坐标系推导出控制曲面的精确表达式,避免了以前的控制曲面只有在转动轴小幅度摆动时才能达到精度要求的局限性;
A balance analysis method of rotating mirror is proposed based on SolidWorks, Which utilizes the quality assessment function of SolidWorks to get the centroid coordinates and the angle between rotation axis and center inertia main axis as the criterion of dynamic balance. 提出了一种基于SolidWorks的转镜平衡分析方法,该方法利用SolidWorks的质量评估功能得到转镜的质心坐标和中心惯性主轴与旋转轴的夹角以此作为转镜动平衡性能评价指标。