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This paper provides a method of variable integrity testing to detect the faults of software By checking the definition domain of the variable itself and the restriction condition of consistency between variables, we only need to determine the bound of each output data, rather than the exact value Although the output of testing case cannot be easily caught, this method can improve the efficiency of detecting faults Furthermore, the checking point is not limited to the final output place, but spreads over the reference places in the program code to key variables just like those at the checkpoints under debugging As a consequence, the testing becomes more precise
由于软件测试用例的输出部分很难确定,而通过测试变量自身的定义域和变量间的一致性约束关系,只需要确定输出值的范围而不用知道其确切的值,就可以提高了错误检测的效率同时,检测的范围不局限于程序最后的输出结果,而是散布在程序中的各个有意义的变量,正如调试过程中设置断点观察的那些变量,使得检测错误更加精准1 引言软件测试的本质在于针对要测试的内容确定一组测试用例[1] 测试用例分为输入和输出两部分功能测试和结构测试等基本的软件测试方法,都比较关心测试用例的输入部分定义域的确定,而对测试用例的输出部分考虑得较少例如,边界测试和等价类测试[2 ] 只考虑测试用
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Han, a high school dropout, has built a franchise by tweaking his elders, once stating,"No matter how rude and immature they are, how unskillfully they write, the future literary world belongs to the post-'80s generation. They must be more arrogant. A writer must be arrogant." Yet despite his youthful bravado, Han, who has published 14 books and anthologies, generally stays away from sensitive issues such as democracy and human rights. His calculated rebelliousness, says Lydia Liu, a professor of Chinese and Comparative Literature at Columbia University, exemplifies the unspoken compact his generation has forged with the ruling Communist Party: Leave us alone to have fun and we won't challenge your right to run the country.
韩寒,一个高中退学生,借力于他对老一辈作家的讽刺,他曾指出:"不管他们写的多么粗俗,多么幼稚,多么烂,中国文坛的未来是属于80后的,他们必须更加清高,一个作家,就必须清高"尽管他年轻高傲,却已经出版了14本书和精选集,这些书一般都远离敏感的问题,比如民主和人权,哥伦比亚大学汉语比较学的教授Lydia Liu评价他这种游刃有余的反叛性,例证了他在共产党的当言则不当隐--给我足够的自由做我喜欢的事情,我则不会对你的政权构成任何的威胁。
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3D-CTM (Coupled Thermo-Mechanical Forming Simulation) software for precision forging process of aero-engine blade was developed. The key technologies of 3D coupled rigid-viscoplastic thermo-mechanical FEM simulation of blade forging process were studied systematically. By using the remeshing method of contracting from the boundary to the inner, new mesh system from old distorted mesh system can be obtained. A method of modifying the position of nodes touching on the die according to its original normal was proposed to avoid "dead lock" problem due to uncontinuity of normal of scatted die meshes. The pseudo-static iterative algorithm was used to simplify the coupled thermo-mechanical computation. In particular, formulations to determine relaxation factor β was established for rigid viscoplastic FEM adopting penalty function method, and an improved cubic factor rapid algorithm derived from these formulations was proposed by combining with the advantage of advance and retreat search method.
采用基于边界构形的内缩法,实现了三维畸变网格的重新划分;提出了初矢修正法对触模节点的位置进行修正,解决了由于离散的模具网格的法矢不连续造成的&死锁&问题;采用准静态迭代法简化了速度场和温度场耦合计算过程;特别是针对减速因子β的选取,建立了适用于三维复杂成形过程刚粘塑性罚函数法有限元三次因子法的计算公式,并结合进退搜索法提出了改进的三次因子快速算法,提高了模拟计算效率和稳定性,在此基础之上,开发了面向叶片精锻过程的三维刚粘塑性热力耦合有限元模拟分析系统(3D-CTM),系统的可靠性得到了圆柱体镦粗的验证。
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In one corner was a stagnant pool of water, surrounding an islandof muck; there were several half-drowned fowls crowded together under a cart,among which was a miserable, crest-fallen cock, drenched out of all life andspirit; his drooping tail matted, as it were, into a single feather, alongwhich the water trickled from his back; near the cart was a half-dozing cow,chewing her cud, and standing patiently to be rained on, with wreaths of vaporrising from her reeking hide; a wall-eyed horse, tired of the loneliness of thestable, was poking his spectral head out of a window, with the rain dripping onit from the eaves; an unhappy cur, chained to a dog-house hard by, utteredsomething every now and then between a bark and a yelp; a drab of a kitchenwench tramped backwards and forwards through the yard in patterns, looking assulky as the weather itself; everything, in short, was comfortless and forlorn,excepting a crew of hardened ducks, assembled like boon companions round apuddle and making a riotous noise over their liquor.
在院子的一角,一潭污水围着孤岛似的粪堆;几只几乎被雨水淋透的鸡簇拥在一辆马车底下,其中一只可怜的公鸡,倒垂着鸡冠,被淋得没精打彩,毫无生气;它那聋拉着的尾巴粘结在一起,仿佛只成了一根羽毛,雨水顺着它从背脊往下直淌;离马车不远处,有一头睡眼惺松的奶牛,嘴里喂着反刍的食物,默默地站在那里,任凭雨水打在身上,湿淋淋的背上冒出缭绕的水气;一匹眼珠小而眼白特大的马厌倦了马厩里的寂寞,把它那幽灵似的脑袋从窗口探了出来,屋檐上的雨水滴沥滴沥地落在它头上;一只不幸的杂种狗被链条拴在近旁的狗窝里,时时发出似吠似嗥的声音;一个邋遢厨娘拖着木屐,迈着沉重的步于在院子里进进出出,她那郁郁不乐的神色,就像阴沉的天气一样;总之,除了一群饱经风雨的鸭子,像饮酒作乐的朋友那样聚集在污水潭的四周戏水而外,这儿的一切都令人感到凄凉和沮丧。
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In one corner was a stagnant pool of water, surrounding an island of muck; there were several half-drowned fowls crowded together under a cart, among which was a miserable, crest-fallen cock, drenched out of all life and spirit; his drooping tail matted, as it were, into a single feather, along which the water trickled from his back; near the cart was a half-dozing cow, chewing her cud, and standing patiently to be rained on, with wreaths of vapor rising from her reeking hide; a wall-eyed horse, tired of the loneliness of the stable, was poking his spectral head out of a window, with the rain dripping on it from the eaves; an unhappy cur, chained to a dog-house hard by, uttered something every now and then between a bark and a yelp; a drab of a kitchen wench tramped backwards and forwards through the yard in patterns, looking as sulky as the weather itself; everything, in short, was comfortless and forlorn, excepting a crew of hardened ducks, assembled like boon companions round a puddle and making a riotous noise over their liquor.
在院子的一角,一潭污水围着孤岛似的粪堆;几只几乎被雨水淋透的鸡簇拥在一辆马车底下,其中一只可怜的公鸡,倒垂着鸡冠,被淋得没精打彩,毫无生气;它那聋拉着的尾巴粘结在一起,仿佛只成了一根羽毛,雨水顺着它从背脊往下直淌;离马车不远处,有一头睡眼惺松的奶牛,嘴里喂着反刍的食物,默默地站在那里,任凭雨水打在身上,湿淋淋的背上冒出缭绕的水气;一匹眼珠小而眼白特大的马厌倦了马厩里的寂寞,把它那幽灵似的脑袋从窗口探了出来,屋檐上的雨水滴沥滴沥地落在它头上;一只不幸的杂种狗被链条拴在近旁的狗窝里,时时发出似吠似嗥的声音;一个邋遢厨娘拖着木屐,迈着沉重的步于在院子里进进出出,她那郁郁不乐的神色,就像阴沉的天气一样;总之,除了一群饱经风雨的鸭子,像饮酒作乐的朋友那样聚集在污水潭的四周戏水而外,这儿的一切都令人感到凄凉和沮丧。
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Our factory is specialized manufacture all kinds of special shape of the bent glass, styling, including L, U, W, Z, spherical, oval, round, cone, back to bell-shaped and many other forms, our plant would produce its own super-hot bending furnace can be custom-made glass, hot bending the maximum size of 8000mm * 3600mm * 19mm, meet a variety of curtain wall and the large size of the needs of bent glass products used in fine cosmetics Showcase, jewelry Showcase, mobile phones Showcase, fish tank, glass coffee table, TV cabinet , bedside cabinets, a few telephone, shower room, spiral staircase, building curved balcony, transportation charges booth, light roof, sightseeing elevator, arched corridors, I-processing performance and stability of hot bending glass products, the quality of Good (no mold burn marks, there is no rainbow effect), size precision (error control in 1-2mm), low price (baked finished high rate, profit-sharing client) is willing to provide our clients with quality service, welcome calls, to e-mail consultation to discuss , and we look forward to your joining!
我厂专业加工制作各种特殊异形的热弯玻璃,造型包括L,U,W,Z,球面,椭圆,圆,圆锥,回字型等多钟造型,我厂自行制作的超大热弯炉可以定做热弯玻璃最大尺寸8000mm*3600mm*19mm,满足各种幕墙及超大尺寸的热弯玻璃的需求,产品应用于精品化妆品展柜,珠宝展柜,手机展柜,鱼缸,玻璃茶几,电视柜,床头柜,电话几,淋浴房,旋转楼梯,大楼弧形阳台,交通收费岗亭,采光顶,观光电梯,拱形走廊等,我厂加工的热弯玻璃产品性能稳定,品质优良(无模具烫伤痕迹,没有彩虹现象),尺寸精准(误差控制在1-2mm,价格低廉(出炉成品率高,让利客户),愿为广大客户提供优质服务,欢迎来电,来邮件咨询洽谈,我们期待着您的加盟!
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。