查询词典 centerline

This approach utilizes the fact that if the centerline of target image gets through the center point of the image plane,perspective projection and parallel projection must have the same image-forming property.

依据在目标成像的中轴线通过像面中心的时候，平行投影法和透视投影法有相同的成像特征这一事实，提出了一种无模型误差的修正平行投影法。

This paper introduces the concept of automated intelligent tire design as basis, and then systemically presents the general framework of CAD 3-D digital tire model design platform. Its modules include the demand representation, demand preanalysis, product list generation, product list modeling, testing, tires knowledge-base and tire parts-base. The realizing process and key techniques of the product list modeling module are described, including calculation principle of groove section and groove modeling scheme ,and so on. This paper also introduces an improved algorithm of calculating groove centerline. Finally CATIA platform and VBA toolkit-based tire design system is established under detailed demand representation type.

在提出自动化智能轮胎设计概念基础上，系统地阐述了计算机辅助设计三维轮胎数字化模型开发设计平台的整体架构，包括需求表示、需求分析预处理、产品清单生成、产品清单造型、产品检验、轮胎知识库和轮胎零件库等模块；叙述了数字轮胎设计造型模块的实现过程和关键技术，包括花纹沟截面计算原理和各种花纹沟的造型方案等，同时，还提出了一种改进的计算花纹沟中心线的算法；最后基于CATIA三维造型平台和自动化语言VBA二次开发工具实现了在详细需求表示类型下的轮胎设计系统。

I used the centerline as a reference point to position and mark the locations for my two (2) Graupner Voith-Schneider Propulsion drives.

我用了中线作为一个参考点的位置和马克的地点为我的二（ 2 ）格劳普纳沃依特-施奈德推进驱动器。

In this paper, by measuring the Doppler spreads and the centerline slopes of the ship from a sequence of sub-images generated with successive short time data, the variations of the resultant effective rotation vector and its vertical component are estimated.

该文通过对数据分段短时成像，估计舰船在一系列子图像中的多普勒频率展宽和船体中心线斜率，获得雷达与舰船之间合成有效转动矢量和垂直转动分量随时间的变化。

Firstly, the equivalent changes of the effective resultant rotation vector and its vertical component with time are estimated by imaging the data in successive partially overlapped intervals and subsequently estimating the Doppler spread and the centerline slope of the ship target shown in each subimage.

该方法首先对回波数据进行分段短时成像，通过估计每幅图中舰船目标在方位向的多普勒频率展宽和船体中心线斜率，获得等效的雷达与舰船之间合成有效转动矢量和其垂直转动分量随时间的变化。

The results show that urbanization of Wuxi City presents a growing trend from 2001 to 2008,with an uneven development of spatial expansion which mainly includes centralized development and ribbon\|shaped development. The mostly direction is along the centerline of Changzhou\|Wuxi\|Suzhou Cities and encircles the Taihu Lake. The expansion speed in south\|east is the fastest.

结果表明：2001-2008年无锡城市化呈现出不断增加的态势，同时城市空间扩张呈现出不均匀性，主要表现为集中发展和条带状发展两个特点，扩张方向主要集中在常州-无锡-苏州城市中心线沿线和环太湖方向，其中，以东南部扩张最为迅速。

Methods: In control group, the studied model was X-rayed with the central mark of scale penetrated vertically by the centerline of X-ray-tube and both ends of the scale included in the radiation field.

对照组：X线球管中心线对模型1标尺的中点标记进行垂直摄影，照射野包含标尺的两侧标记，摄影距离120cm，物－台距离3.5cm。

Piston-type check valve: valve valve slide along the centerline of the valve body.

活塞式止回阀：阀瓣沿着阀体中心线滑动的阀门。

The preferred location is between the steering column and the vehicle centerline.

首选的位置在转向柱和汽车中线之间。

For the first offence the ball is awarded to the opponents for a throw-in at the centerline.

第一次违例，判予攻方在中场界线外掷界外球。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。