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The title and bill of material in engineering drawings are important data source for product data integrated management. In order to reuse the CAD data, the paper presents an effective method for extracting part information from existing engineering drawings. Through analyzing the format of title and bill of material, several shape-position characteristics of tables are summed up from the view of macro-layout and microstructure. A new method to automatically extracting drawing information based on cell-grid and feature-point is proposed along with its algorithm principle and implementation steps. A software package based on the method mentioned above is developed and used in practice.

1引言工程图是工程设计的主要成果和制造加工的主要依据，CAD软件的广泛应用使得传统上对于纸质图纸的管理模式转变为对大量电子文件的管理模式·由于文件系统在实际应用中不能适应复杂大规模的管理模式，已经出现了各种各样的图档管理系统[1]·工程图中包含的零件信息在表现形式上体现纸格式的标准化为批量提取数据提供了可能性·作为计算机处理的对象，图纸信息自动识别成为数据管理和系统集成的一项关键技术·当前CAD管理系统所处理的数据对象比较复杂，面临由不同企业使用不同的绘图软件生成的图纸，其中的标题栏和明细栏或者由软件自动生

Now computer's universalization can cause national each corner people possibly to contact the printer, it will gi

当今电脑的普及化会使得全国的每一个角落的人们可能接触到打印机，它会给人们的生活带来一定的改变，但不是所有的打印机用户都能随心所欲的使用它，因为原装耗材太贵了，许多消费者承受不了原装价格。

Because the traditional wireless microphone uses the frequency low silent chain, all is analyzes the radio-frequency signal the intensity, therefore they cannot and need the noise the signal differentiates; In the noisy radio frequency environment (for example digital equipment and so on CD/VCD/LD send out massive overtones) under use, when this launcher signal weak or closure, the silent chain possibly can open suddenly, the receiver can send out the intense demolition noise.

传统无线麦克风因采用频率低的静噪电路，都是分析射频信号的强度，所以它们不能把噪音和需要的信号区分开来；在嘈杂的射频环境(如CD/VCD/LD等数码设备散发出的大量谐波)下使用，在该发射器的信号微弱或关闭时，静噪电路可能会忽然打开，接收机就会发出强烈的爆破噪声。

a mandatory testing device to prevent drunk driving is proposed.it can mandatorily test whether and how much a driver or a sailor on watch drunk.only when the alcoholicity of the exhalation breathed out by the people tested is normal,small type or automobiles can startup,the person on watch of a large ship can register as working.otherwise,if the alcoholicity is overproof,small type ships or automobiles can't startup,and neither does the device allow the person on watch register as working and it can inform the captain via alarm.in this way,drunk driving problem can be solved effectively only by setting a simple device.

该装置具有强制检测机动车驾驶员和船舶值班人员饮酒状态的功能，当被测人员呼出的气体酒精含量正常时，机动车或者小型船舶可以启动，大型船舶的值班人员可以记录为值班；当被测人员呼出的气体酒精含量超标时，机动车或者小型船舶无法启动，大型船舶的值班人员则不能记录为值班，同时可以通过报警器通知船长。这样，仅通过安装使用这样一个简单的装置，就有效地解决了酒后驾驶机动车和船员酒后值班的问题。

This development of white mensural notation may be a result of the increased use of paper, as the weaker paper was less able to withstand the scratching required to fill in solid noteheads; notations of previous times, written on vellum, had been black.

这种white mensural notation的发展也许是纸张使用的增加造成的，这是由于单薄的纸张不是很能承受得了把符头填充成实心儿的刮画；其实在这之前的乐谱的符头是黑色的。

The result indicated that: the amount of the excess HF formed direct ratio to the yield of phosphorus pentafluoride and the optimum amount of the excess HF used is about 35%; the trickling rate of oleum shouldnt make the temperature of hexafluorophosphoric acid exceed 25 ℃ and the amount of oleum is 110% to 125% that of stoichiometry so that the content of phosphorus pentafluoride can be achieved 90%; the time and temperature of heating hexafluorophosphoric acid influenced both the yield and the content of phosphorus pentafluoride, and the optimum time should be about 30 minutes and the proper temperature was 148 to 153℃; when alcohol used asrefrigerant, the content of phosphorus pentafluoride was 94.03%, and the content can be up to 97.38%, provided that using liquid nitrogen as refrigerant.

通过实验发现，氟化氢用量与五氟化磷的产率成正比，最佳过量百分率宜在35％左右；发烟硫酸的滴加速度不能使中间产物温度大于25℃，发烟硫酸用量大于理论量10％～25％时，得到的五氟化磷纯度高于90％；六氟磷酸的加热温度对五氟化磷的产率和纯度均有影响，宜在148～153℃的范围内，加热时间应在30分钟左右；用工业酒精做冷凝介质得到的五氟化磷纯度最高只能到达94.03％，使用液氮做冷凝介质可以使五氟化磷的纯度达97.38％以上。

Again, civil law and common law tend to integrate with each other, and many countries have adopted the system of prejudication, and countries implementing common law have established the corresponding rules of law.

其次，我国古代有使用判例制度的先例，我们去除了很多古代的糟粕，因为其阻止了国家的发展脚步，但是，作为精华的判例制度能很好的弥补我国法律制度的缺点，我们不该割舍的。

Webeye mesh the first time - you can find on the site every visitor through the Show visitors information (including its location, at the time the search engine queries, etc.) to help you identify the most The value of these potential customers and target customers with immediate online talk to humane manner and take the initiative to build your online customers a bridge, your site into a true sense of the sales portal, and resolutely left off any sales opportunities !

一、Webeye网眼---能让您第一时间发现网站上的每一位访问者，通过查看访客信息（包括其所在地、停留时间使用的搜索引擎搜索关键词等），帮助您筛选出最有价值的潜在客户并与这些目标客户立即在线洽谈，以人性化的方式搭建您主动与客户在线的沟通桥梁，您的网站变成真正意义上的销售门户，坚决不放过任何一次销售机会！

Our main contribution is in presenting;(1 )the definition of masqueraded degree for a computer in sometime by the number of masqueraded IP divide the number of the network session;(2) the algorithm for maintaining the queue of masqueraded IP, changing their states and competing the masqueraded IP by sending ARP messages; Using DivertSocket to monitor the packets, and basing Netfilter and IPTables, we design an experimental system IPDM based on this model, and satisfactory results are obtained.

改变其状态和竞争伪装IP；使用监测数据包的DiverSocket，Netfilter和IPTables，我们设计了一个基于此模型的实验IPDM，获得了满意结果。引言扩大了IP伪装的范围，从而增加了攻击者的攻击难度，起到了主动防御的作用。目前解决网络安全问题的主要技术手段有加密技术，基于网络、主机的各种防范措施，以及信息伪装技术等。这些技术在防御网络入侵、保护信息安全方面均有一定的作用。但不能很好

Matsuyama et al used calcium phosphate cement, which polymerizes at lower temperatures.37,38 Results were good in terms of pain relief (8.6 preoperatively and 2 postoperatively on the visual analog scale), neurologic recovery and kyphosis restoration (vertebral height was restored to 68%, compared to 41% preoperatively).37,38 This combination of maximal/minimal surgical treatment has value especially in neurologically compromised patients with indication for surgery, who cannot tolerate long procedures and large blood loss due to medical comorbidities.

Matsuyama等人使用磷酸钙骨水泥，其硬化反应温度较低[37，38]，结果表明疼痛缓解良好（视觉模拟评分从术前的8.6分减至术后的2分），神经功能恢复和后凸畸形矫正良好（椎体高度从术前的41％恢复至术后的68 ％）[37，38]，这个&最大/最小&的手术组合治疗方法，尤其适合伴有神经症状而不能耐受长时间的手术和大量失血的患者。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。