旦數增大 的英文怎麼說
中文拼音 [dànshǔzēngdà]
旦數增大
英文
denier uptake-
The boom of modern naviation technology urgently requires its navigation system to be more accurate and more reliable. it is unpractical to meet both demands by any kind of navigation equipment separately. when the classical centralized kalman filter ( ckf ) is used in this kind of integration, there will be two disadvantages : firstly, there exists real time computation difficulty
如果組合導航系統按照傳統的設計方法設計成維數龐大的集中式卡爾曼濾波器，則計算量將以維數的三次方劇增，給實時計算帶來困難；且容錯能力較差，一旦某一子系統出現故障，所有正常工作的子系統都會受到污染。On the base of the fujian power system that has the special configuration of " large power generator with small power system " in 2000, constructs power system models of fujian and fujian interconnected with other parts, does a lot of calculation and analysis and simulation, researches the security mechanism and rule of the fujian special power system interconnected with large power system. the above connection can keep security and stability and can make obvious benefits, but when the transmission power reach to excessive quantity the main power grid will increases interconnected flow - in or flow - out exchange power load. the power operation state tended to instability ; the infirmable interconnection make s the damp infirmable
本文以2000年前後具有「大機組小電網」特殊結構的福建電力系統為背景，建立了福建電力系統及其與外部互聯的數學模型，開展大量的模擬計算分析，研究了「大帆組小電網」電力系統與大容量電力系統互聯偏弱的安全穩定性的機理和規律：前述互聯可以安全穩定運行，取得顯著效益，當傳輸功率達到一定量后，主網架增加了送出或吸收互聯交換功率的負載，系統運行狀態向穩定性水平有所下降的方向轉移；聯絡偏弱使阻尼偏弱，聯絡線小幅低頻振蕩和大幅低頻振蕩易被激發，聯絡線一旦重載斷開，系統高周或低調嚴重。There must be more application systems and more users in our campus network in future. this complexion can bring two problems : first, the possibility that cwiss are attacked by hacker is higer because the more and more resource in our cwiss. second, users have to supply their accouts and password repeatedly when they want to enter different systems, the method is to fussy, more important, can lost the password, canse fatal lost
今後還會不斷增加新的應用系統，用戶數量也會不斷增加，這樣就帶來了信息安全方面的兩個問題：一是上網的信息資源越多，受黑客攻擊的可能性越大（尤其是一些敏感數據） ，二是眾多用戶面對多個系統要重復輸入帳號、口令等信息，不僅煩瑣，更重要的是容易出現口令丟失，一旦口令泄漏會造成不可估量的損失。
分享友人