用途

Provable Security is a formal method for proving the security of cryptographic schemes, in which the difficulty of breaking a particular scheme is formally related to that of solving a widely believed computational hard problem. Provable security has already become an important theme of theoretical researches in modern cryptography. This dissertation investigates the provable security of public-key encryptions and hybrid encryptions of asymmetric and symmetric encryptions. This includes the various formal security notions and the constructions can be proved to achieve them. Among the constructions, hybrid encryptions are themselves an important way to obtain public-key encryption schemes with chosen ciphertext security. The main results are as follows:(1) The one-wayness of the trapdoor one-way function in NTRU depends on the randomness of the session key, which is different from previous ones. Based on this observation, a new kind of trapdoor one-way function, trapdoor one-way functions with an auxiliary random variable is proposed.

可证明安全性是一种证明密码学方案安全性的形式化方法，它将密码学方案的安全性归约为公认的计算难题，已成为现代密码学领域中理论工作的主线，本文主要研究公钥加密与单双钥混合加密的可证明安全性，这包括它们的各种形式化安全性定义以及达到这些安全性定义的方案构造，而单双钥混合加密本身也是一种构造选择密文安全公钥加密的重要方法，本文得到的主要结果如下：(1)在研究NTRU公钥加密的特殊性基础上，对于公钥加密的陷门单向函数加密模型进行了扩展，提出了具有辅助陷门单向函数的概念，并将其扩展到多元的情况，讨论了可能的密码学用途。

Castor oil is in the utility of the respect such as aviation, chemical industry, medicine is very big.

蓖麻油在航空、化工、医药等方面的用途很大。

Tungsten –Copper alloy is the composite of Tungsten and Copper which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity,high-density, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electric power, electron, metallurgy, spaceflight and avigation.

钨铜材料是钨和铜的一种合金，综合了钨和铜的优点，耐高温、耐电弧烧蚀、强度高、比重大、导电、导热性好，易于切削加工，并具有发汗冷却特性，作为真空触头材料、电极材料、电子封装材料以及火箭、导弹特殊用途材料等广泛应用于机械、电力、电子、冶金、航空航天等工业。

However, here the strict linearity and axiality of the building is skilfully negated by the extensive use of semi – reflective glass panelling and sheer planes of glass on both front and rear facades, cleverly interleaved with cedars to diffuse the exterior boundaries and soften the building's inherent rigidity.

然而，这里大厦的严密的线性和axiality由对半–反射性玻璃玻璃铣板和纯粹飞机的广泛的用途熟练地否定在两个在前后门面的，聪明地插入与雪松散开外部界限和软化building's固有坚硬。

Not to inherit by right of primogeniture, gavelkind or borough English, or possess in perpetuity an extensive demesne of a sufficient number of acres, roods and perches, statute land measure (valuation 42 pounds), of grazing turbary surrounding a baronial hall with gatelodge and carriage drive nor, on the other hand, a terracehouse or semidetached villa, described as Rus in Urbe or Qui si sana , but to purchase by private treaty in fee simple a thatched bungalowshaped 2 storey dwellinghouse of southerly aspect, surmounted by vane and lightning conductor, connected with the earth, with porch covered by parasitic plants, halldoor, olive green, with smart carriage finish and neat doorbrasses, stucco front with gilt tracery at eaves and gable, rising, if possible, upon a gentle eminence with agreeable prospect from balcony with stone pillar parapet over unoccupied and unoccupyable interjacent pastures and standing in 5 or 6 acres of its own ground, at such a distance from the nearest public thoroughfare as to render its houselights visible at night above and through a quickset hornbeam hedge of topiary cutting, situate at a given point not less than 1 statute mile from the periphery of the metropolis, within a time limit of not more than 15 minutes from tram or train line (e.g., Dundrum, south, or Sutton, north, both localities equally reported by trial to resemble the terrestrial poles in being favourable climates for phthisical subjects), the premises to be held under feefarm grant, lease 999 years, the messuage to consist of 1 drawingroom with baywindow (2 lancets), thermometer affixed, 1 sittingroom, 4 bedrooms, 2 servants' rooms, tiled kitchen with close range and scullery, lounge hall fitted with linen wallpresses, fumed oak sectional bookcase containing the Encyclopaedia Britannica and New Century Dictionary, transverse obsolete medieval and oriental weapons, dinner gong, alabaster lamp, bowl pendant, vulcanite automatic telephone receiver with adjacent directory, handtufted Axminster carpet with cream ground and trellis border, loo table with pillar and claw legs, hearth with massive firebrasses and ormolu mantel chronometer clock, guaranteed timekeeper with cathedral chime, barometer with hygrographic chart, comfortable lounge settees and corner fitments, upholstered in ruby plush with good springing and sunk centre, three banner Japanese screen and cuspidors (club style, rich winecoloured leather, gloss renewable with a minimum of labour by use of linseed oil and vinegar) and pyramidically prismatic central chandelier lustre, bentwood perch with fingertame parrot, embossed mural paper at 10/- per dozen with transverse swags of carmine floral design and top crown frieze, staircase, three continuous flights at successive right angles, of varnished cleargrained oak, treads and risers, newel, balusters and handrail, with steppedup panel dado, dressed with camphorated wax: bathroom, hot and cold supply, reclining and shower: water closet on mezzanine provided with opaque singlepane oblong window, tipup seat, bracket lamp, brass tierod and brace, armrests, footstool and artistic oleograph on inner face of door: ditto, plain: servants' apartments with separate sanitary and hygienic necessaries for cook, general and betweenmaid salary, rising by biennial unearned increments of 2 pounds, with comprehensive fidelity insurance, annual bonus (1 pound and retiring allowance (based on the 65 system) after 30 years' service, pantry, buttery, larder, refrigerator, outoffices, coal and wood cellarage with winebin for distinguished guests, if entertained to dinner, carbon monoxide gas supply throughout.

505他并不想根据长子继承制、男子平分继承制或末子继承制，把那幢有着门房和马车道的男爵宅邪及其周围那一大片辽阔的英亩、路得和平方杆法定土地面积单位，（估价为四十二英镑的泥炭质牧场地，或者那座被描述为"都会中的田园"或"健康庄"的有阳台的房子或一侧与邻屋相接的别墅，继承下来并永久占有。他只巴望根据私人合同购买一所继承人身分不受限制的不动产：要坐北朝南的一座草屋顶、有凉台的双层住宅，房顶上装起风向标以及与地面相接的避雷针，门廊上要爬满寄生植物，橄榄绿色的正门最后一道工序漆得漂漂亮亮，赛得过马车。门上有着精巧的黄铜装饰。房屋正面是灰泥墁的，屋檐和山墙涂着金色网眼花纹。尽可能让房子耸立在坡度不大的高台上，从那圈着石柱栏杆的阳台上，隔着现在空着、将来也不得占用的牧场地，可以聎望四周的一片好景致。单是自己的庭园，就有五、六英亩之谱。它与最近的公路的距离适度：夜晚从修剪得整整齐齐的鹅耳枥树篱上端和缝隙间，可以瞥见室内的灯光，从首都边界的任何地点丈量，与这所房子相距至少也有法定一英里。不出十五分钟就可以轰电车或火车铁道沿线。（例如往南去登德鲁姆或往北去萨顿，就像是南北两极。经过验证，据说这两处气候都适合肺结核患者。）凭着继承人身分不受限制的不动产转让证拥有房屋和地基，租借期限为九百九十九年。宅邸里包括一间有着凸窗的客厅，一间起居室，四间卧室，两间仆役室。砌了瓷砖的厨房里还安装了多用途的铁灶和洗涤台，休息厅里备有放亚麻布床单衬衫用的壁橱，分成几层的氨熏橡木书柜，放着《大英百科全书》和《新世纪辞典），横陈着一把把中世纪或东洋的古老刀剑；还有通知开饭的锣，雪花石膏做的灯，悬垂着的饰钵，附有电话号码簿的胶木自动电话听筒；手织的阿克斯明斯特地毯，是奶油色质地，周围镶着棋盘图案。有着兽爪形柱脚的牌桌。壁炉装着大型黄铜格栅，炉台上摆着精密的镀金计时表，准确无误地发出大教堂那样的钟声，附有湿度计的晴雨表，蒙着鲜红色长毛绒面子、装着上等弹簧、中心部位富于弹性的舒适的长靠椅和放在角落里的备用椅，日本式三扇屏风，痰盂（俱乐部里摆的那种，用深紫红色皮革制成，只要用亚麻子油和醋一擦，不费吹灰之力就能发出光泽，焕然一新。）室中央悬挂一盏金字塔式枝形吊灯，射出灿烂的光辉。一截弯木上栖着一只驯顺得能停在手指上的鹦鹉，墙上糊着每打价为十先令的压花壁纸，印着胭脂红色垂花横纹图案，顶端是带状装饰；一连三段栎木楼梯，接连两次拐成直角，都用清漆涂出清晰的木纹，梯级、登板、起柱、栏杆和扶手，一律用护板来加固并涂上含樟脑的蜡；浴室里有冷热水管，盆汤、淋浴，设备俱全。位于平台上的厕所里，长方形窗子上嵌着一块毛玻璃，带盖的坐式抽水马桶，壁灯，黄铜拉链和把手，两侧各放着凭肘几和脚凳，门内侧还挂有艺术气息浓厚的油画式石版画。另外还有一间普通的厕所；厨师、打杂的女仆和兼做些细活的女佣的下房里也分别装有保健卫生设备（仆役的工钱每两年递增两英镑，并根据一般忠诚勤劳保险，每年年底发奖金一英镑，对工龄满三十年者，按照六十五岁退职的规定，发退职金）；餐具室、配膳室、食品库、冷藏库、主楼外的厨房及贮藏室等、堆煤柴用的地窨子里还有个葡萄酒窖（不起泡、亮光闪闪的葡萄酒），这是为宴请贵宾吃正餐时预备的。对整座楼房都供应一氧化碳瓦斯。

Purposes:With ethanol, ethyl ether, chloroform, benzene, ether and other immiscible oil, and with some solvents can be formed azeotrope.

用途：与乙醇、乙醚、氯仿、苯、石油醚等混溶，并与可其中一些溶剂形成共沸物。

Leading products for a wide range of uses of sodium azide.

主导产品为用途广泛的叠氮化钠。

Balance of payments data are useful in a number of ways.

国际收支平衡表中的数据有许多用途。

Generally, cross-stitch can be used for: 1 clothing and personal adornment; 2 baldric and ornament; 3 articles of everyday use and home decorations; and 4 recreation at leisure and making friends.

Uses of Cross-stitch 从十字绣的用途上看大致分为四部分，第一是服装、服饰；第二是佩饰、饰品；第三是日用品及家居装饰；第四是休闲、交友。

Shi Zixiu uses: Shi Zixiu from the use of terms broadly divided into four parts, namely, clothing, apparel; second Baldric, jewelry; third, daily necessities and home decoration; fourth is leisure, friends.

从十字绣的用途上看大致分为四部分，第一是服装、服饰；第二是佩饰、饰品；第三是日用品及家居装饰；第四是休闲、交友。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐