delta function 中文意思是什麼
delta function
解釋
δ函數-
The characteristics of biodiversity of yellow river delta are as follows : the vegetation structure is simplex and coverage is lower, which is characterized with obvious younger nature and abundant wetland ; the flora composition is simple, the plants usually could resist against salt and drought ; the xerophytes and meso - xerophytes are abundant, there are many mutual species with inner mongolia, which incarnated the biology corridor function of yellow river ; there are many animal species belong to national protected species, so the significance for biodiversity protection is great
黃河三角洲地區生物多樣性主要表現出如下特點：植被結構簡單、覆蓋度低、生態系統年輕性特點和濕地生態系統特點明顯；植物種類少、常具有抗鹽、抗旱特性；旱生、中旱生植物以及與內蒙古共有植物種類多，充分體現了黃河的生物廊道作用；主要保護動物種類多，生物多樣性保護意義重大。 -
Ginget milk curd bingquan brand ginger milk curd also called jiang zhuang milk is a kind of popular delicacy with traditional flavour in the pearl river delta areas. the products is specially processed with best selected fresh milk, refined sugar and ginger juice not only the characteristics of tender taste and rich fragrance of milk ginger, but also has the distinctive function of relieving symptoms caused by cold factors
在保持傳統的風味的基礎上，將牛奶生薑中的有效成份經提取后，使用高分子材料加以有效保護，使牛奶生薑中的色澤香氣營養成分等到得以有效保留，形成獨特的速食薑汁奶花即姜撞奶，解決了食用的攜帶不方便的問題，是居家旅行饋贈親友的上好佳品。 -
Now tourism has become the new ways to change economic growth in developed countries because its function on optimizing industry construction, widening market scale and elevating city quality etc. so we can consider tourism industry as the new motive power or new path to change economic growth ways in the yangtze river delta region
在長三角區域面臨社會經濟轉型的關鍵時期，旅遊產業以優化產業結構、擴展消費市場規模、創造就業機會和提升城市品質等多重功能，成為區域內具有競爭優勢和發展潛力的產業，為加快長三角實現經濟增長方式的轉變提供了新視角、新路徑和新策動力。 -
Compared with a delta wing aircraft, the double - delta wing configuration has better aerodynamic performance at high angles of attack. an operational analysis was introduced as a method for evaluating training effectiveness of trainer aircraft. approaches to the engineering estimation of aerodynamic characteristics for aircraft with a double - delta wing configuration were studied, and the procedures for determining aircraft performance indices formulated. taking training effectiveness as the objective function and geometric parameters of the wing platform as design variables, through a numerical multivariate optimization arithmetic, the conceptual design optimization for a certain fighter trainer aircraft with double - delta wing configuration was carried out under the constraints of tactical and technical requirements and interrelated geometry. agreement of a calculation example with engineering practice indicates that the optimal design has higher training effectiveness than the baseline design, and in addition, improves the structural force - bearing conditions
雙三角翼氣動布局比三角翼飛機具有更好的大攻角空氣動力特性.引入了評估教練機訓練效能的作戰分析法，研究了雙三角機翼布局飛機空氣動力特性的工程計算途徑以及飛機性能指標的確定方法.以訓練效能作為目標函數並選取機翼平面形狀的幾何參數為設計變量，採用多變量數值尋優方法，在戰術技術指標及相關幾何約束條件下，對某高級教練機的雙三角機翼氣動布局方案進行了優化選擇.算例表明最優方案不僅比原準方案具有更高的訓練效能，還改善了結構的受力情況，與工程實踐吻合 -
Based on the observation data obtained from 69 sampling sites of different age class forests, and by using biomass expansion factor function, the regression equations of stand biomass and volume of the main forest forests in pearl river delta were built, and the regional forest biomass and its dynamics were estimated on the basis of forest inventory data
摘要利用生物量轉換因子連續函數法，通過69組不同齡級的森林樣地實測數據，擬合了珠江三角洲主要森林類型的生物量和蓄積量之間的回歸方程，並結合3個時段森林清查資料，估算了區域森林生物量及其動態。 -
The paper points out that to fulfil the coordinated development of industrilization and urbanization, guangxi can learn from home and abroad, such as to expand the township - owned enterprices and private enterprices like the south of jiangsu and zhejiang, to develop foreign - oriented economy like zhujiang delta, to stress the guide of government like japan, to develop the market economy and pay attention to transportation like the united state, and so on. and guangxi should keep a food hold on the current foundation, follow the market and give free rein to the policies, instruction function of government, and enlarge the size and capacity of present cities, adjust the industrial structure, develop non - agriculture, and at the same time make full use of the macro - policies of autonomous region to innovate the systems and some prolelems need concerning
本文提出廣西實現工業化和城市化的協調發展可以借鑒蘇南、浙江發展鄉鎮企業、民營企業，珠江三角洲發展外向型經濟，日本重視政府的引導，美國發展市場經濟、重視交通建設等國內外的經驗，立足於廣西的現有基礎，以市場為導向，發揮政府的政策指導功能，對現有城市進行擴容增量，調整產業結構，發展非農產業，同時充分利用「自治區」的宏觀層面政策進行制度創新，以及需要注意的一些問題。 -
The interpolation function has the delta function property, so the essential boundary conditions can be simply imposed
由於插值函數具有delta函數特點，因此可以很方便地施加本質邊界條件。 -
It is have important strategic significance in chongqing ' s omnidirectional empolder to east ( the changjiang river delta and the zhujiang river delta ) and promote economic development. the building of wanzhou sub - transport junction and qianjiang sub - transport junction in east of chongqing not only have important significance in improving traffic condition of chongqing ' s northeast district and chongqing ' s southeast district and promoting region economic development, but also have important effect to allure human flow and matter flow, boost up connect function of west to east ditectional of chongqing main - transport junction
重慶市東部地區的萬州、黔江次級交通樞紐的建設，不僅對于改善渝東北、渝東南兩個地區的兩個地區的交通條件、促進區域經濟的跨越式發展有重要的意義；而且對于吸引人流、物流，增強重慶主樞紐東西方向的連接功能具有重要的作用。 -
The important study is the electric parameter measurement system which is achieved with sigma - delta a / d converter and dsp " sampling to three phrase voltage and current. its function includes the measurement of current, voltage, frequency, phrase, power, factor, active power and energy, reactive power and energy
本文主要研究了用? a d轉換器和dsp處理器對工頻三相電壓、電流進行數字采樣，再用數字低通濾波器實現對三相電參數進行測量的測量系統。其主要功能包括對電流、電壓、頻率、相位、功率因數、有功功率、有功電能、無功功率、無功電能等測量，並具有測量數據并行輸出介面。 -
Flood prevention function of panjin wetland at liaohe delta
遼河三角洲盤錦濕地防洪功能研究 -
In the design, new research and technology are learned about, two modulation ways, pwm and sigma - delta, which can be used to develop digital amplifiers are compared, and theories about 1 - bit technology are studied. then, according to the simulation by matlab, factors which influence system function and parameters which control the work of parts are discussed
該課題研究了當今數字功率放大器的發展動態以及相關的技術原理，比較了用於實現數字功放的兩種主要方式: pwm和sigma - delta調制方式，結合matlab模擬提出了系統中各模塊需要的基本參數、影響系統性能的相關因素。 -
According to the calculated results, the effects of correlation strength and correlation time between noises on the above quantities are discussed, and are compared with the situation of a delta function correlation form between moises
根據計算結果討論了噪聲間的關聯程度和噪聲間互聯時間對以上各量的影響，並和噪聲間具有函數關聯形式的情況進行了比較。
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