T - trapeziform 中文 - EN166

trapeziform adj.不規則四邊形的。

trapezium
After generalizing the characteristic of modern equipment , the mission of equipment management and general situation of chinese equipment management , basied on two forms of equipment management - - - - - - practicality & value , the author combined quantitative & qualitative methods with example to analyze and discuss questions , especially the reasonable update & depreciation , accordingly achieving the optimization of the technical efficiency & economic benefit 0 one of emphases of the thesis is methods application of equipment reasonable update , that is starting with economic benefit to looking for reasonable using fixed number of year . the thesis used inferior - converted numeric method and rate equation which based on the theory square and combined with harbor loading machines & tugboat ' s actual facts , calculated the economic life of the same machine in order to make sure harbor machines “ reasonable using fixed number of year . at the same time , the author made use of midpoint value regress method and stochastic trapeziform forecast method to calculate and analyze and gain the reasonable conclusion o the other emphases is questions of harbor equipment 本文概括介紹了現代設備的特點、設備管理的任務以及我國設備管理發展的概況后，作者從設備經濟管理的兩種形態? ?實物形態和價值形態出發，采取定量與定性相結合，以定量為主，結合實例進行分析與論述，對港口設備的合理更新與折舊問題進行了著重研究，從而實現設備的技術效能和經濟效益的最優化。本文研究的重點之一是設備合理更新的方法應用，即從經濟效益出發，來尋求設備的合理使用年限。本文結合港口裝卸機械和港作拖輪的實際，運用以正方形理論為基礎的低劣化數值法和費用方程兩種方法，計算了同一種機械設備的經濟壽命，從而確定港機合理的使用年限，同時，運用了中點值回歸法和隨機梯形預測法進行計算和分析，得到了合理的結論。
It includes two aspects in content : one is the best choice for plane disposal of pipeline , and its methods follows as decision - making plot , simple trapeziform and optimizing trunkform etc ; the other one is optimizing pipe parameter when the plane disposal of pipeline has been fixed , and the methods of which are linear programming , unlinear programming , dynamic optimizing , direct optimizing , hereditary arithmetic and so on 污水管網優化設計包括兩個方面的內容：一是管線平面布置的優化選擇；其方法有：決策圖法，簡約梯度法，優化樹法等。二是在管線平面布置已定情況下進行管道參數的優化；其方法有：線性規劃法，非線性規劃法，動態優化法，遺傳算法，直接優化法等。
Because the cross - section of the oversized rib waveguide we fabricated by wet - etching was trapeziform , we analyzed the transmission of oversized rib waveguide by combining effective refractive - index method . the influence of some factors on the optical transmission loss , such as material structure , the height of rib waveguide , and the thickness and refractive index of waveguide layer and up - layer of polymer material , was analyzed 因為濕法腐蝕工藝制作的反脊波導橫截面是梯形狀的，因此論文中采用了一種簡單有效的方法，即有效折射率法，對梯形反脊波導的光傳輸損耗特性進行了分析，同時考慮金屬電極產生熱場對脊波導傳播特性的影響。
The subject is space train station : a trapeziform aisle symbolizes transporting in time to show people a time shifting inter - space 以時空車站為主題，一條梯形的逐漸放大時空穿梭走廊迅速鋪開，使人感覺進入了一個時空交替的太空展覽空間。
The paper presents the trapeziform chart for production line controlled 論文提供了生產線的控制梯形圖。
Tapered end mills for trapeziform runner with parallel shanks 直柄梯形澆口用錐型端銑刀