For the regular curves, we find two killing fields for the purpose of integrating the structural equations of the p - elastic curves and express the p - elastica by quadratures in a system of cylindrical coordinates. for the star - like affine curves, we solve the euler - lagrange equation by quadratures and reduced the higher order structure equation to a first order linear system by using killing field and the classification of linear lie algebra sl ( 2, r ), sl ( 3, r ) and sl ( 4, r ). we solve the centroaffine p - elastica completely by quadratures
對于正則曲線的情形,我們發現了兩個用於求解p -彈性曲線的結構方程的killing向量場並用積分將p -彈性曲線在一個柱面坐標系中表示出來,而對仿射星形曲線的情形,我們用積分方法解出了歐
拉-
拉格朗日方程,
利用killing向量場及線性李代數s1 ( 2 , r ) 、 s1 ( 3 , r )和s1 ( 4 , r )的分類將高階結構方程降為一階線性方程,因此我們用積分完全解出了中心仿射p -彈性曲線。
Mr cowe conacre multifarnham. nat : arising out of the question of my honourable friend, the member for shillelagh, may i ask the right honourable gentleman whether the government has issued orders that these animals shall be slaughtered though no medical evidence is forthcoming as to their pathological condition ? mr allfours tamoshant
:關于希
利拉格262選區的議員-尊敬的朋友提出的問題,請允許我向閣下質問一下:政府是否已下令,即便從醫學上對這些動物的病理狀態提不出任何證據,也要一律予以屠宰呢?
Latest reports confirm that igli tare will sign a 3 year deal with lazio tomorrow, and that lazio has already approached the finnish embassy in rome to acquire the necessary documents for the player to travel to finland where lazio meets tampere united on saturday
最近的報道進一步證實了明天伊
格利?塔雷將會與
拉齊奧簽署一份為期3年的合同,而且
拉齊奧已經在接觸羅馬的芬蘭大使館為這名球員獲得到芬蘭所必須的文件證明,
拉齊奧星期六將要在那裡對陣坦佩爾聯隊。
The discovery of three ashokan pillars has revealed the native towns of three buddhas, namely : krakuchchand, kanakamuni, and shakyamuni at gotihawa, niglihawa, and lumbini respectively in the south - west terai regions of nepal
三座阿育王石碑在此豎立是彰顯了與三尊佛陀有關的鄉鎮,分別是迦葉佛、卡納卡牟尼佛與釋迦牟尼佛分別在:歌帝哈瓦、尼
格利哈瓦與藍毗尼園,這些城鎮都在尼泊爾的塔
拉伊西南方。
Within 700 km, there are 8 european capitals around kielce - berlin in germany, vienna in austria, prague in czech, minsk in belarus, kyiv in ukraine, bratislava in slovakia, vilnius in lithuania and budapest in hungry
其周邊700公里內就輻射到了八個國家的首都? ?德國柏林、奧地
利維也納、捷克布
拉格、白俄羅斯明斯克、烏克蘭基輔、斯洛伐克布
拉迪斯
拉發、立陶宛維爾紐斯、匈牙
利布達佩斯。
Based upon virtual displacement method and the updated - lagrangian approach, stiffness matrices for two - dimensional elastic - plastic beam model in large displacement were proposed, in the derivation of which transverse stress was included because it was believed that part of the 2nd order effects of various stresses, which are in equilibrium with each other and with the external loads, will counteract each other and neglecting either part would possibly lead to incorrect results
利用虛位移原理和更新的
拉格朗日方法,導出了大位移彈塑性梁單元剛度矩陣的顯式表達式,在剛度矩陣推導中引入了截面內非線性剪應力和橫向應力的影響,剛度矩陣通過了剛體檢驗。之所以要引入橫向應力的影響,是因為本文認為,保持平衡所需的所有應力,它們各自的二階效應會相互抵消,因此忽略其中的任何一項都可能導致不正確的結果。
Prague czechoslovakia, wien austria - " real utopie
捷克斯洛伐克布
拉格和奧地
利維也納, "真正的烏托邦
At 3342 meters, mount etna is the highest peak, and europe s largest active volcano. a number of small islands located around sicily are popular tourist resorts, the volcanic aeolian or lipari archipelago being the largest group. the extensive coastline ranges from rocky cliffs to sandy beaches, but sicily also offers other fascinating natural sights such as alcantara gorge near taormina, various caverns carburangeli near carini and others around sicily and on the surrounding islands, and the grey mud flows formed by sporadic geysers that give maccalube, near aragona, its moonlike appearance.
一是首府帕勒摩palermo ,往近郊的monreale或segesto遺跡都很方便二是卡塔尼亞catania ,有南義米蘭之稱,義大
利作曲家貝里尼出身此地,且北有陶美尼taormina小山城,南有薩
拉庫撒siracusa三是阿
格利真托agrigento ,神殿之谷絕對值得一訪,有諸神的居所的美稱。
By improving the conventional electric - arc fusion method, we have realized the splicing between two kinds of mofs and smf with relatively low splice losses. we have written fiber bragg gratings in grapefruit mof successfully. the multi - wavelength resonances are observed in the grating, and theoretical analysis shows that this phenomenon is caused by the resonances between core modes and cladding modes
在此基礎上對微結構光纖光柵進行了理論和實驗研究,在柚子型光敏微結構光纖上成功寫制了布
拉格光柵,觀察到多波長的反射峰,並
利用全矢量有限元方法對微結構光纖布
拉格光柵中的多波長諧振現象進行了理論分析,最後在實驗上對其在多參量傳感和多波長光纖激光器件中的應用進行了嘗試。
The scent of a woman is more attractive at certain times of the month, suggests a new study that had men sniffing women ' s armpit odor. " we were interested whether armpit odor changes across menstrual cycle, " said study author jan havlieek of the department of anthropology at charles university, prague
據「生活科學網」日前報道,捷克首都布
拉格查爾斯大學的人類學專家揚哈夫
利切克是這項研究的參與者之一,他說: 「我們對女性的體味是否會在月經周期中發生改變這個問題很感興趣。
Take marc philip bragger t0 be y0ur lawfully wedded husband
是否願意讓馬科.菲
利浦.布
拉格成為你合法的丈夫
Liverpool stars steven gerrard and jamie carragher have both signed new contracts at the club
利物浦球星斯蒂芬傑
拉德和傑米卡
拉格已與俱樂部續約。
But liverpool defender carragher is first choice to replace him and ferdinand expects him to perform well
而利物浦后衛卡拉格是代替他的第一選擇,費迪南德希望他能表現好。