架

Motion synchronization between tool in X direction and principal axis rotation was controlled by electronic gearbox in cam turning. And profiling mechanism could be superseded by servo tool-holder. Linear motor direct drive servo tool-holder was designed, and host-slave control system with PC and DSP was developed for the require of high-speed and realtime servo. The technical process was analyzed in cam turning. Servo tool holder with tool swinging and principal axis variable rotate speed were presented to keep constant cutting angle and speed.

将电子齿轮箱用于凸轮车削加工系统的传动，以伺服刀架取代了传统加工的靠模装置，实现了刀具X方向直线运动与机床主轴转动的同步控制；设计了直线电机直接驱动的伺服刀架及基于PC与DSP构成的上—下位机控制结构，采用DSP进行实时控制以满足高速伺服需要；对凸轮加工过程的工艺特点与恒角度、恒速度车削进行研究，提出了具有刀具摆动功能的伺服刀架与机床主轴变转速运动方案。

Row of circular arc steel pipe were used to support respectively in the steel pipe support longitudinal base and the crown on the skewback, causing the steel centering and the steel pipe support combines the overall rigid arch centering, both common stress, has enlarged the arch centering application span and the steel pipe support altitude effectively.

采用了在钢管支架纵向底部和顶部各设置4排圆弧钢管支撑于拱座上，使钢拱架与钢管支架组合成整体刚性拱架，两者共同受力，有效加大了拱架的应用跨径和钢管支架的高度。

In the paper the standing_wave effect of spiral spring as well as its influence on the suspension vibration isolation characteristics are studied using the four_pole parameter method under linear supposition condition.

本文在线性假设的条件下，利用四端参数的分析方法，研究分析了悬架螺旋弹簧的驻波效应及其对悬架振动传递特性的影响，并利用研究结果对悬架振动实际实验中测量得到的结果进行了解释。

The main purpose of the present paper is to obtain the relation between the abstract presentation of Euclidean objectivity and its component representation with respect to the general curvilinear coordinate systems with a relative rigid motion under a fixed frame of reference, so that the tensor representation of Euclidean objective quantity has its component form.

建立了欧几里德标架无关性的一般表述与某一参考标架\phi 下作相对刚体运动的一般曲线坐标、分量表述之间的关系，从而使欧几里德标架无关性的张量表述有相应的分量表述形式。

A switching system interface (304) including one or more network interfaces for terminating digital transmission facilities; one or more interfaces (403, 404) for coupling to line/trunk frames (212) of a digital switch; a time-slot assignment means for connecting time slots to those of the line/trunk frames; and a call processing means for coordinating call setup and teardown between the DLC local terminal and the line/trunk frames, and for managing the time-slot assignment means to complete calls.

一种交换系统接口包括：一个或多个用于终结数字传输设备的网络接口；一个或多个用于连接到数字交换机中继线键架(212)的接口(403，404)；一用于将时隙与中继线键架的时隙相连接的时隙设置装置；以及一用于在DLC本地终端和中继线键架之间调整呼叫建立和拆卸和用于完成呼叫而管理时隙设置装置的呼叫处理装置。

From 10th Sentai lt bmr 6 planes saw 10 Tupelov SB twin-engined bombers on airfield NE Tamsang, bombed them and claimed 2 destroyed.

第10战队的6架轻轰炸机看见了10架图波列夫SB双发轰炸机停在塔木察格西北方，轰炸它们并声称击毁2架。

This text will introduce three-dimensional modelling techniques and CBR used in underframe design field, and the development of a set of three-dimensional intelligent underframe design system.

本文将三维造型技术与实例推理技术结合运用到机房底架设计领域，提出基于实例推理的底架设计流程，开发了一套底架三维智能设计系统。

Therefore, the in-depth research on the process of dynamic loads when braking ,the analysis about the causation and influence factor of the dynamic loads" emergence is necessary to the design of the circumgyrate machinery Aim at above problems, this text treats the portal crane"s boom system as a research object ,using finite element analysis and mechanism kinetics as theories foundation and analysis means ,utilizing ANSYS8.1 to research the dynamic effect of the crane boom under the circumstance of braking.

针对以上问题，本文以MQ4033门座起重机臂架系统为研究对象，以有限元和机械动力学为理论基础，运用ANSYS8.1对臂架系统在回转制动时的工况进行动力学分析，获得了臂架系统的模态特征以及在回转制动时的动力响应。

Today, Hendrickson is the world's leading designer and manufacturer of high quality truck, tractor, and trailer suspensions, liftable suspensions, springs, bumpers and special systems for the heavy-duty transportation

&No.002&，&瀚瑞森悬架贸易有限公司/No.002&，&Hendrickson Suspension System（Shanghai&，&美国&，瀚瑞森成立于1913年，是专业从事中型和重型车辆悬架系统设计和制造的跨国公司，是全球最大的悬架系统供应商。

"The helicopter went back and forth, flying over another group-in-hiding at mountain Phou Yeui," said Chue Chou Tchang. They called me and informed me that the helicopter was either a B8 or B12, which can load up to 50 people, and that helicopter flew 11 times back and forth, from the direction of village Na Khae to the direction of Muang Mek.

&这架直升飞机来回盘旋，并飞越另外一个苗族同胞藏身的山头&，人们告诉我那是一架B8或者B12运输直升飞机，能一次运输50个人，这架直升飞机在Na Khae村与Muang Mek之间来回11次之多。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。