圆的

In order to increase the roundness of bearing ourside diameter,the guide pulley driving system of cylindrical grinding machine was transformed.

为提高轴承外径的圆度，将 M1080外圆磨床的导轮传动系统进行了改造。

The effect of main dimensions and form coefficients on the calm water resistance of round bottom hull is analysed on the basis of published test results as well as on the design experience of dozens of home-built crafts.

本文根据国内外圆舭快艇系列试验资料和我国的设计经验，分析了圆舭快艇主尺度和系数对阻力的影响。

Consider the scenario where a solvent is manufactured in a dedicated facility, but is drunned in a muti purpose one rather than a dedicated drum filling facility.

试想这样一种情况，当用一种专用设备生产一种溶液，但要流经一个多功能的圆桶而不是一个专用的圆桶注入装置。

The automatic nail making machine is a special purpose machine which is designed for processing various size of nails.

全自动制钉机是专为制造各种规格的圆钉而精心设计的，我厂生产型号齐全，可以生产各种圆钉及异形钉，用途广泛，操作简便，使用安全，运行可靠，随时向您提供各种配件。

Prove that the common external tangents of ω1 and ω2 intersect on.

证明：圆ω1和ω2的两条外公切线的交点在圆ω上。

Beijing Fengyuan machinery of the limited liability company's products are: rectangular, round-the wind of automated production lines, plasma cutting machine, a total of flange plate machine, plug-flange machine, bite Machine, Flap machine, leveling pressure tendons machines, electric cutting plate machine, riveting machine, the machine Chongjian, vol Jiaotie round machine, coiling machine; and Germany TRUMPF sheet metal electrical tools open Liu shear, infantry Chongjian, the groove machine, the panel saw, etc.

北京力丰源机械有限责任公司生产的产品有：矩形、圆形多功能风管自动生产线、等离子切割机、共板法兰成型机、插接式法兰成型机、咬口机、折边机，调平压筋机、电动剪板机、铆接机、联合冲剪机、角铁卷圆机、卷板机；并且是德国TRUMPF钣金电动工具（开料剪、步冲剪、坡口机、库板锯等）、瑞士TOMREC圆风管生产线、奥地利FORSTNER多功能钣金自动开料生产线在中国的总代理。

According to the trimming-mechanism and the trimming-deformation process of the strip ,the trimming force and the driving power of rotary trimming shears are analyzed and calculated.

从剪切机理、板带的剪切变形过程，分析计算圆盘剪剪切力和传动功率，介绍了圆盘剪开口度调整装置，剪刃侧间隙调整机构和重叠量调整机构以及侧间隙和重叠量对剪边质量的影响

There was a revival of ancient Roman forms , including the column and round arch, the tunnel vault, and the dome.

复兴古罗马的形式，包括廊柱和圆拱，地道的拱顶以及圆屋顶。

First, according to the parts of materials processing operations, cutting tools and other relevant factors and choose the outline of the handle and part characteristics identify nine tools were cylindrical rough turning, cylindrical precision turning, external grooving cutter , internal thread cutter, Boring tool within the inner notch cutter, 93 ° left side knife, 93 ° right-side knife.

第一，根据本零件材料的加工工序、切削用量以及其他相关因素选用刀具及刀柄和零件的轮廓特点确定需要9把刀具分别为外圆粗车刀、外圆精车刀、外切槽刀、内螺纹刀、内镗孔刀、内切槽刀、93°左偏刀、93°右偏刀。

In this study, a commercial CAD/CAM Software is used to plan and generate the multi-axis tool path, and a table rotating/tilting type five-axis machining center is used to perform the experimental machining operation. The material of the die studied is NAK 80 die tool steel, and the geometries are modeled as concave and convex spherical surfaces. Milling parameters considered are spindle speed, feed rate, and different types of cutting tool path. The experimental results show that the surface roughness for concave spherical surface is about 0.247 μm and roundness is about 0.0283 mm and the surface roughness for convex spherical surface is about 0.250 μm and spherical roundness is about 0.0551 mm under the cutting conditions mentioned in this study.

本研究的实验方法与步骤包括利用商用CAD/CAM系统针对实验对象规划三轴/五轴同动加工路径，并经后处理程式转换，在本实验室之平台倾斜/旋转型之五轴加工机上进行实验，实验对象为NAK80模具钢材料之凹与凸球形曲面之加工，此外考虑的切削条件有主轴转速、进给速度、加工路径等，在本研究所设定之最佳切削条件下，凹球形曲面之真圆度约为0.0283 mm，粗糙度为0.247 μm，而在相同切削条件下，凸球形曲面之真圆度为0.0551 mm，粗糙度为0.250 μm。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。