圆的

When you cut down a tree and look at the stump, you can see that the wood has lots of dark rings in it. Long ago, the wood dried out and people kept throwing darts at the stump, the wood started to crack from the center to the sides. That is why modern dartboards have rings and lines.

当你把一棵树砍倒后，看看树桩，就可以看到为数众多的深色圆环，当时木头乾掉，人们持续朝树桩射飞镖，木头就会从中间向旁边裂开，这就是为何现代标靶有圆环和线条。

Numerical simulation of hole flangingBased on ABAQUS software, forming process of hole flanging is simulated.

圆孔翻边的数值模拟基于ABAQUS软件，对圆孔翻边成形过程进行了模拟分析。

Disc around the mouth and has a large number of small sentry post mouth, big mouth post holes for the bass, small mouth post holes for the treble, to the mouth of the disc number of posts are classified as shuang xiang, four-ring, 6 ring, until the 36 ring.

圆盘四周都有一个大哨口和许多小哨口，大哨口为低音孔，小哨口为高音孔，以各圆盘哨口的数量而分为双响、四响、六响，一直到三十六响。

As to the pumps with middle and low aspect ratio which are extensively used, the disk friction losses dissipate large proportion of the craft power. Reducing this kind of loss will improve the efficiency effectively.

对于工程实际中经常使用的中、低比转数离心泵，圆盘摩擦损失在轴功率中所占比例较大，因此降低圆盘摩擦损失对提高泵效率具有显著影响。

Our company has successfully manufactured SDS-plus round shank electrical hammer drills,SDS-plus square shank electrical hammer drills,SDS-max round shank electric hammer drills,long hexagonal shank electric hammer drills series,short hexagonal shank electric hammer drills series and all kinds of steel chisels series products.

公司现已成功研制开发出四坑圆柄、四坑方柄、五坑圆柄，长、短六角柄电锤钻系列及各种规格型号的钢凿子系列产品。

Web rotary screen business card printing and membership card making use of nickel metal pellets, built-in screen scraping knife and automatic ink, scraping knife business card printing and membership card from making ink print on over to the Nano-imprint lithography drum supported substrate surface.

卷筒纸轮转丝网制卡和会员卡制作使用镍金属圆丝网印版、内置刮墨刀和自动供墨系统，刮墨刀将制卡和会员卡制作油墨从圆丝网版上转移到由压印滚筒支承的承印物表面。

Slitting imports of high-precision machine circular knife, following sets, pouches and CBN grinding wheel, alloy steel ultra-thin, high-speed steel knife-cut round, Shaped like knives and, in particular, Xiao impact of the various accessories, with imports of all kinds of special-shaped teeth slotted knife and tool steel single-pole/double-throw front, high-precision machine-cut Slitting blade Wenmingquanguo series, the products are sold throughout the country and exports Overseas.

高精度进口纵剪机圆刀，隔套，胶套及CBN砂轮，超薄合金钢，高速钢分切圆刀，及各异型类刀具，尤其冲击肖的各种配件、进口带齿开槽刀各种异形工具以及锋钢单刀、高精密度纵剪机分切系列刀片闻名全国，产品销往全国各地并出口海外。

If c is the largest slope of the tangents from the point to the circle , find the value of c.

6 图三 Figure 3 现有点和圆。如果c是通过点与圆相切直线的最大

Then thetheorem can be proved by calculating the distances of centres between a nine-point circle and...

然后通过计算九点圆与内切圆、九点圆与旁切圆的圆心距，使定理获得证明。

The company is the only exclusive Wenzhou professional manufacturing technology, be sure to look for the Star-hang-day company's production plant presses main products are: 1, shade net warp machine, mesh bags for the plane, polyethylene Drawing Machine , To machine, round wire-support equipment. 2, round Loom textile production of plastic packaging bags, the output value of 5 million, 10,000 -4500, complete sets of equipment production line configuration. 3, knitting machinery: Goubian high-speed automatic machine, lace machine, scarves and other campaign machinery.

本公司是温州地区唯一独家专业制造技术，请认准天星公司恒天塑机厂生产的主要产品有：1、遮阳网经编机，网眼袋经编机，聚乙烯拉丝机，收丝机，圆丝机配套设备。2、圆织机生产塑料包装纺织袋，年产值500万－4500万条，生产线成套设备配置。3、针织机械：全自动高速钩编机，花边机，围巾机等系列机械。

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。