useful quantity 中文意思是什麼
useful quantity
解釋
較大數量-
A very useful quantity is the half-time for the reaction.
一個很有用的量是反應的半衰期。 -
Promotion party b shall exert his best with diligence in advertising and promoting the sale of products in an effective manner on his own account and party a shall provide party b free of charge with a reasonable quantity of advertising or sales promotion material such as advertising literature, catalogues, leaflets and other materials which party a deems useful for party a in his activities under this agreement
促銷:乙方應辛勤並盡最大努力自費以有效方式宣傳和推銷產品，而甲方需免費提供給乙方合理數量的宣傳品、目錄、小冊子和甲方認為對乙方從事協議項下業務有用的其他資料。 -
It is very urgent for people to transform them into useful information and knowledge, and apply them in business administration, production control and forecasting, etc. as a kind of technology for extracting information from large quantity of data, data mining and knowledge discovery has become a significant research problem which has important theoretical and practical values, and attracts widely attention in international academe
世界進入信息時代，在各個領域存在大量數據，人們迫切需要將它們轉換成有用的信息和知識，以應用於商務管理、生產控制和預測等方面。數據挖掘和知識發現作為從海量數據中提取信息的一種技術，已經成為當前一個具有重要理論和應用價值的研究課題，在國際學術界引起了廣泛關注。 -
The quantity of data is so large that people ca n ' t use it easily although it is likely that much valuable information is hiding in it. then how can we find the potential useful knowledge and make use of it in our decision - making
過量的數據被人們稱為信息爆炸，帶來的挑戰是：一方面規模龐大、紛繁復雜的數據體系讓使用者漫無頭緒、無從下手；另一方面在這些大量數據的背後卻隱藏著很多具有決策意義的有價值的信息。 -
This paper analyses the reserve transport and economic results of lubricating oil of import and joint investment made automible. and supply performance index period of changing 10w / 30sf / cd, provide scientific foundation for appraising quality level and adaption of this lubricating oil, and offer economic foundation for wide use in cold zone. at first the paper analyses the performance of the lubricating oil useful in some automible in cold zone then obtain a quantity data and optimum period changing of 10w / 30sf / cd
本文對進口及合資生產車輛的配套用油及所用油的儲運情況，經濟情況進行了分析，並提出了10w 30sf cd通用內燃機油的性能指標換油周期及經濟情況，為評價該油的質量水平及相應車輛的適應性提供了科學依據，同時為其在我國寒區開辟廣闊的應用市場提供了經濟技術依據。 -
It is this fact that makes pressure so useful a quantity in physics.
就是因為這個性質，使壓強成為一個非常有用的物理量。 -
Since the generated gas from gas source rocks is expelled in the form of separate phase, can it be useful for the form of pool. so, the expelling gas value of carbonate gas source rocks is more important, this paper, based on the principle of material balance, divide the tough problem of expelling hydrocarbon into relatively and easily investigated problems of gas hydrocarbon generation, residual and diffusion gas hydrocarbon and evaluate gas source rocks in temis of the magnitude of expelling gas ; hydrocarbon ( quantity of expelling gas = gas quantity of generation - adsorption - dissolving in oil - dissolving in water - diffusion )
由於所生成的氣態烴只有從源巖中以游離相運移出來之後才能對氣藏的形成做出貢獻，因此對氣源巖的排氣能力的評價顯得猶為關鍵。本文根據物質平衡法原理將比較棘手的排氣態烴問題，分解成相對較易考察的生氣態烴問題和殘留、耗散氣態烴的問題，以排氣量大小（排氣量=生氣量?吸附氣量?油溶氣量?水溶氣量?擴散氣量）為評價碳酸鹽巖氣源巖標準。 -
This paper gives the method of batch quantity rule and analyzes the influence to mrp calculation and the order cost problem, provides the useful data with the enterprise decision maker
本文給出了幾種批量方法，分析其對mrp計算影響，分析訂購成本問題，給企業決策者提供有用的數據依據。 -
Now information is obtained easier and easier. but when much information pushes to people, which makes people faced with data tragedy, how to get useful information from many data is a prodigious task. rs is brought out by the way of a new method to reduce the data. this paper researches rs and reduction arithmetic based on rs, establishes data mining model based on rs. rough neural network is put forward which combines rs and neural network. this net model is applied in the research of forecasting system about quantity of heat. the net model is validated through the data of coal analysis
本文在深入研究了粗糙集理論及其基於粗糙集理論的約簡演算法，建立了基於粗糙集理論的數據挖掘模型，在此基礎上，將粗糙集與神經網路相結合，提出了一種粗糙集神經網路，並將其作為基於神經網路的燃煤發熱量預測系統的網路模型，解決了基於神經網路的燃煤發熱量預測系統的技術問題，並結合具體電廠的煤質分析數據驗證了粗糙集神經網路模型的有效性。 -
What the practical problems is often gotten is a single variable time series which has a time interval of t, reflect by a lot of interactive physics factor, containing the mark of all variates participating in movement, traditional time series analysis is to analyse going from this array to the form directly it ' s time develops, one dimension analysis loses useful information, the characteristics of phase space reconstruction method is to construct one dimension scalar quantity to high dimension vector, prop the geometry space of the state, show all dynamical information of system in phase space. the characteristic that just constructs again according to the phase space in this text, analyse the time series of responding, use the relevant knowledge of symbol dynamics and reconstruct phase space, put forward a kind of relation degree analysis method of the systematic mathematics model which has theory basis, so reach the correction of calculation mathematics model, make it accord with the actual systematic state
實際問題中常常得到的是一個時間間隔為t的單變量的時間序列，它是許多物理因子相互作用的綜合反映，蘊藏著參與運動的全部變量的痕跡，傳統的時序分析是直接從這個序列去形式地分析它的時間演變，一維分析必然喪失許多有用信息，相空間重構方法的特點是把一維標量數據構造成高維矢量，支起狀態的幾何空間，在相空間中展示系統全部動力信息。本文正是根據相空間重構的特點，對響應時間序列進行分析，利用符號動力學、重構相空間等方法，提出一種有理論依據的系統數學模型關聯度分析方法，從而達到修正計算數學模型，使其更符合實際系統狀態的目的。 -
In chapter 5 experiments is made on pulverized coal classifier ( pcc ) with air absorbed from the bottom of it and hope to find a simple and high efficiency method to collect coal. the results show the useful method is to control certain absorbing air quantity and positions. simulation is made on pcc to study the flow field and grain track
最後，本文對電廠的一臺200mw的四角切園的鍋爐應用再燃改造方案后爐內的情況進行了數值計算模擬，研究了四角切圓鍋爐內no _ x的生成規律和再燃技術應用后對no的還原效果，並對鍋爐進行改造后爐內的流場和溫度場進行了計算，為工程應用提供參考。 -
As quantity, distance and size of cross - section of shaped steel have great influences on load - carrying of whole composite slabs, the author presented design principles and methods, which are useful for future cross - section design of composite slabs with shaped steel, steel sheet and concrete
對組合板中型鋼梁設置的數量、間距和截面尺寸對組合板承載力的影響進行了研究，提出設計原則和方法，為型鋼和壓型鋼板與混凝土組合板的截面設計提供依據。 -
Through the qualitative and quantitative studies, and testing the models via given data, analytic methods could solve problems about the optimal configuration of handling equipment in container terminals and reduce the quantity of equipment at ease. the operation cost in docks would be controlled effectively. the conclusion also became the useful reference for making decision in ports " management
通過定性與定量的研究，以及用給定的算例對模型的驗證，可以解決有關集裝箱碼頭裝卸機械的優化配置方面的問題，來減少設備的閑置量，有效地控制碼頭的營運成本，為碼頭的經營管理提供決策的依據。 -
With rich data hi tram tickets system, how to mine useful knowledge is an important problem. applying the technology of classification hi train tickets analysis, we construct a new classification method tt _ dtc ( decision tree classification based on train tickets ). we apply new classification algorithm sf _ dt ( decision tree classification algorithm based on splitting files ) that bases on splitting files and quantity rules, which aimed at the characters of train tickets
本文將數據挖掘中的分類技術用於鐵路客票營銷分析中的客票分類，形成了一種新的分類方法tt _ dtc （ decisiontreeclassificationbasedontraintickets ） ，該方法針對鐵路客票的實際特點，採用新的基於文件分割和定量規則的決策樹分類演算法sf _ dt （ decisiontreeclassificationalgorithmbasedonsplittingfiles ）對客票數據進行分析，以達到依據客票屬性特徵對客票發售及列車運營情況進行分類及預測的目的。 -
Yet as an objective measure of quantity of information, it has been enormously useful in science and technology
但是做為客觀資訊含量的度量標準，夏儂熵在科學與工程上非常有用。
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