自由跨度 的英文怎麼說
中文拼音 [zìyóukuàdù]
自由跨度
英文
free span-
We have developed the theory of boundary shielding approximation of electric polarization, from which the values of spontaneous polarization of some typical ferroelectric materials can be derived. the shielded charges in ferroelectricity are in the state of surface bound polaron - dipole whose creation and annihilation must span a potential barrier. by introducing statistical method, four types of typical electric hysteresis loops of some common crystals and ceramics have been given, which are well consistent with the experimental results
利用電極化的邊界屏蔽近似，可計算出一些典型鐵電單晶的自發極化強度.鐵電屏蔽電荷處于表面束縛極化子偶狀態，其產生和湮沒要跨越位壘.由統計方法給出的一些常見晶體和陶瓷的四種典型電滯回線形狀，和實驗觀察到的結果一致Wind tunnel investigation of large span flat roof was carried out. mean local shape factor and extreme local shape factor distributed on the roof of the structure with two exposures are measured. effects of terrain exposures on the mean local shape factor and extreme local shape factor are discussed
然而，對于大多數的屋蓋結構，由於其自身結構和風荷載的復雜性，我國的有關荷載規范中並沒有這方面的建議條文，因此對于大跨度屋蓋結構風荷載特性的研究，已成為一項急需進行的重要課題。It has powerful competitive capacity and huge application market in china for all of its advantages, such as strong spanning ability, light dead weight, rapid construction speed, beautiful configuration etc. nevertheless, for some reasons, its research work lags behind its engineering practice seriously, affecting its further application and dissemination
拱型波紋鋼屋蓋是一種新型的空間鋼結構，具有跨越能力大、自重小、施工速度快、造型優美等突出優點，因而在我國有著強大的競爭力和廣泛的應用市場。但由於種種原因，無論在國內還是國外，其理論研究都嚴重滯後於工程實踐，嚴重影響了結構的進一步推廣和普及。Because they are two - - way ribbed and with re1ative1y smal1 rib spacing, reinforced concrete waff1 e s1abs exhi b it higher st if fness and smaller deflections and behave we11 under 1oads. because of their architectura1 benefits for 1ower structura1 height and l ight weight as we1l as economic benefits, they are best suited for 1arge span structures as wel1 as tal1 bui1dings
鋼筋混凝土雙向密肋樓蓋由於兩向帶肋，肋間距較小，因此不但受力性能好，而且剛度大，整體性好，變形小，結構自身高度小，材料省，自重輕，經濟性好，特別適合於在跨度較大的多層和高層建築樓蓋中採用。With the restraint of our economic developing level, many enterprises in china have n ' t the ability to compete with foreign large transnational companies. some group enterprises ca n ' t establish their market fame because they lack of effective systematic management. while transnational companies widen the gap of abilities in scale, technology, product and marketing between china and world advanced level by strategic alliance and integrated marketing
現階段受經濟發展水平的限制，我國許多企業的實力較弱，暫時不具備與國外的大型跨國公司直接抗爭的能力，一些大的集團公司在市場營銷方面由於缺乏系統性的有效管理，市場營銷往往表現為方式和手段凌亂，競爭力不強；集團內企業各自為戰，傳遞給消費者的「聲音」不一致，很難樹立起集團公司的市場知名度。The third level : on the basis of second level, the scope on study will be expanded from one ' s own system of the enterprise to subjects who is correlated with of advantages and disadvantages with the enterprise, for instance the government, research organization, etc. the concrete content is included to these five chapters from chapter five to chapter nine
第三層次：在第二層次的基礎上，本文將研究的領域和視角由企業自身體制擴展到與企業有利害相關者，如政府，研究機構等。具體內容包含在第五章到第九章這五章中。第三層次研究時間跨度較大，視角范圍比較廣。The author, applying the program of ansys, built a nonlinear model of rc bi - direction cellular slab, and, from the comparison of equivalent - span and equivalent - thickness solid plate, drew several important conclusions. meanwhile he also pointed out that the stiffness of cellular slab would become weaker because of the holes of cross - section which make the tare weight 40 % down comparing to solid plate, but if the weakness of tare weight was considered, the cellular slab still remained the excellent features of integration and stiffness, by which the cellular slab can be put into use of large - span
本文利用有限元程序ansys ，建立了鋼筋混凝土雙向空腹板的非線性計算模型，並和等跨等厚度實心板進行分析對比，從而得出了一些重要結論，指出：在空腹板自重比實心板減少40左右後，空腹板的剛度雖然由於截面的開孔而削弱，但考慮自重減少后，空腹板仍表現出整體性好、剛度大的特徵，從而實現較大跨度樓板的工程應用。分享友人