line of centers的意思|示意

In this paper, a proper analytic methods is proposed for determining the projective formulas when their centers are improper points between two line pencils of projective correspondence.

在两线束射影对应中，当两线束中心为非固有点时，两线束的射影关系式如何确定？本文给出了适当的解析方法。

Haas offers a full line of vertical and horizontal machining centers as well as CNC lathes, rotary tables, and 5C indexers.

数控立式和卧式加工中心、数控车床、转台和5轴分度仪。

Most of the best daycare centers have waiting lists longer than a Stars Wars movie ticket line and it takes time to find interview and hire a nanny.

许多日托中心等候名单比买《星球大战》电影票的队列还要长，并且也需要花费时间去寻找、访问和请个保姆。

Their point of tangency is called the pitch point, and since it lies on the line of centers, it is the only point at which the tooth profiles have pure rolling contact.

他们的切点称为节点，并且由于它的中心连线上的谎言，它是唯一在该点的齿廓有纯滚动接触。

But two hours before the centers opened, there were already hundreds of people waiting in line for the numbered CARDS that were needed to get the vaccination.

但在那之前的两个小时，门口已经有数百人在排队等候领取接种所需的编号卡了。

System management, candidate management, online examinations, on-line production of paper, control student examinations, papers approving centers, and other functions were included in this system.

本系统包括用户类别、权限管理、在线考试、在线制作试卷、控制考试、考生管理、考生成绩查询、试卷审批、系统管理九大功能。