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obturate vt.塞,閉塞;封閉,緊塞;(開炮時)密閉(炮尾)。n....

obtuse

Comparison of stiffness , strength and obturating performance of the initial obturator of the breech mechanism with those of the optimized one is made , which indicates that the stress concentration that leads to fatigue failure in the optimized structure is eliminated . the flexibility of the optimized obturator of the breech mechanism is considerably increased and its obturating performance is substantially improved 對優化前后炮閂閉氣結構剛強度和閉氣性能進行了對比,優化后的結構應力集中問題得到了有效控制,消除了潛在的疲勞源,結構的柔性得到很大程度的提高,閉氣性能有了明顯改善,實現了優化的目的。

Firstly , fourier descriptor used to describe the object ' s shape is introduced to the extraction of feature of apple ' s shape . the boundary of apple is an obturated curve , distance between boundary point and centroid r ( k ) “ is used as a function to express the 2 - d boundary in spatial domain . the fourier transform coefficients of the discrete sequences f ( h ) are spectrum values in frequency domain , and they compose feature parameters of shape 首次將圖像分析理論中對形狀的傅立葉描述方法引入到對蘋果形狀的特征提取中,果實邊界是一條封閉曲線,用邊界點到形心之間的距離長度r ( l )作為空域中對二維曲線的表達函數,離散的函數值序列r ( k ) ~ l的離散傅立葉變換系數f ( h )就是頻域中得到的頻譜值,可作為形狀的特征參數。

Success in optimizing the obturating performance of the obturator of the breech mechanism shows that the method and technology for optimal design of nonlinear multi - component structural system with contact put forward in this thesis is effective and practical . structural optimization problems that are difficult to solve through the optimization method available in the universal cae software can be accomplished by means of this method 對炮閂閉氣結構閉氣性能優化的成功說明了本文提出的對存在接觸關系的多構件非線性結構(裝配體)系統進行優化設計的方法和技術途徑具有實用價值,可以解決在通用cae軟件中現有優化算法難以解決的結構優化問題。

According to the requirement of the obturated deformation and based on analyzing cad designing method of hydraulic press before , a new designing method aiming at practical comercialization , cad parametric designing method of obturated extrusion hydraulic press , has been developed on the platform of ugii software 本文根據閉塞成形工藝的要求,在總結分析了以往液壓機本體cad設計方法的基礎上,以ug為軟件開發平臺,應用現代先進的設計理論與方法,以實用商業化為目標,研究了一種全新的液壓機設計方法? ?閉塞成形液壓機本體cad參數化設計方法。

Graphical user interfaces are developed to be convenient for implementing of parameterized model and debugging of program parameters . program of optimization based on ga is designed to optimize obturating performance of the obturator of the breech mechanism , further , the effect of control parameters of ga and friction factor on the optimal structure is studied 開發了實施參數化建模和程序參數調試的界面,編制了遺傳算法優化程序,對炮閂閉氣結構進行了閉氣性能優化,并研究了遺傳算法運行的控制參數對優化結果的影響以及摩擦系數對最優結構形式的影響。

With the development of information techonology , especially the popularizing of internet , the obturate of databases of institutions with pivotal canonical information turns to a serious problem . this encumbers the development of information tech effectively using of information and consistency of especially information between institutions 隨著信息技術的發展,特別是互聯網應用的推廣,關鍵、權威機構的數據庫信息封閉性已成為嚴重的問題,大大地影響了信息化的發展、信息有效利用和行業(或機構)關鍵信息的一致性。

The denifition of cwml brought xml into the online courseware building area , xml is easy for information taken out and self - descripted , cwml solved the issues such as the form of courseware is obturated , the information is hard to take our and reform . at th 使用authoringsystem來進行cwml網上課件的制作,能夠高效率、迅速地完成能夠重新組合利用的課件形式,很好地支持v陽bservice技術環境下的資源查詢和綁定需求,是在進行分布式網上課件點播系統建設的最佳選擇之一。

3 ) a 3 - d geometry and finite element model of the assembly of the obturator of the breech mechanism is established . quasi - static and dynamic finite element analysis of stiffness , strength and obturating performance of the obturator of the breech mechanism is carried out , based on elastoplastic theory and multi - body contact algorithm , and the simulation results coincide with experimental results , further , th e effect of friction factor on its obturating performance is investigated 建立了炮閂閉氣結構的三維裝配體幾何實體模型和有限元模型,對炮閂閉氣結構剛強度和閉氣性能進行了準靜態及動態多體接觸彈塑性有限元分析,分析結果與試驗結果相吻合,進一步研究了摩擦系數對其閉氣性能的影響。

5 ) the 3 - d geometry and finite element model of the assembly of the optimized obturator of the breech mechanism is set up in terms of the optimized structural parameters . quasi - static and dynamic finite element analysis of stiffness , strength and obturating performance of the optimized obturator of the breech me chanism is performed 利用優化后的結構參數建立了優化后炮閂閉氣結構的裝配體三維幾何實體模型和有限元模型,對優化后的炮閂閉氣結構剛強度和閉氣性能進行了準靜態及動態多體接觸彈塑性有限元分析。

We put forward an algorithm for self - discrimination of island relation and an automatic intersected method of the region machining unit , which can judge the relationship among any plane obturate contour line effectively and swiftly . we also study the tool path generation technology of two - dimensional machining , basso - relievo machining , three - dimensional lifting - pen machining . meanwhile , we put forward an optimize approach of tool path , which improve the efficiency of engraving 研究了圖像的刀具路徑生成技術與軌跡規劃問題,提出了基于射線的島嶼關系自動判斷和區域加工單元的自動分割方法,有效、快速地判斷了平面任意封閉輪廓線之間的關系,研究了平面任意區域填充加工、浮雕加工、三維提筆加工的刀具路徑生成的技術,提出了刀具路徑優化方法,提高了雕刻加工的質量和效率。

Due to some relative independence between departments in enterprise , and short of consolidated plan and standard when designing application systems , there must be some information islands in the application systems , which are separate , heterogenous , obturated and unshared 在企業內部,由于部門間相對獨立,構建系統時缺乏統一的規劃和標準,所以造成了現有的應用系統是分散、異構、封閉的系統,相互之間不能共享信息,形成了一個個“信息孤島” 。

Widely applicable to the various necessaries occasions for solid - liquid separation such as life municipal sewage , papermaking , textiles , dyeing and chemical effluent filtration , especially in the white water treratment of papermaking , it will achieved the obturating and recycling pupose 廣泛適用于需進行固液分離的各種場合,如城市生活污水、造紙、紡織、印染、化工污水等的過濾,尤其適用于造紙白水的處理,達到封閉循環重復使用的目的。

Now it is transport obturated , economic failed behind , transport manner singleness and programming lagged in chongqing ' s southeast district . these badly restict the area ' s economic development 目前渝東南地區交通閉塞,經濟落后,交通方式單一、規劃建設滯后,嚴重制約了區域經濟的發展。

In addition , this model can be generalized easily in the case that many units competing in an obturating system and only one or few will win finally 本模型可以無困難地推廣到多個個體在一個封閉系統中競爭,僅有極少數個體最終獲勝的情形,文章所得結果對于該類復雜系統的建模具有普適意義。

Dental root - canal obturating points 牙根管充填尖

Dental root - canal obturating points 牙根管充填點

1 dental root - canal obturating points amendment 1 牙根管填充點

E obturated construction keep in dust on the box 可自動打開的集塵盒便于清理,