space time product 中文意思是什麼
space time product
解釋
空間時間積, 空間時間關系-
At the same time, the american electrical appliances manufacture already becomes the sunset industry, is similar to the footwear and the clothing, its product end by will import primarily, therefore the chinese electrical appliances enterprise has the full development space in the american market
與此同時，美國家電製造業已成為夕陽產業，如同鞋類與服裝，其產品終將以進口為主，因此中國家電企業在美國市場上有著充分的開發空間。 -
The best scheme was chosen after analysis and comparing and the structure was designed. at same time, the kinematics analysis was conducted, coordinate transformation matrix using d - h method was set up, and the kinematics equation direct solution and inverse solution was deduced, the velocity jacobian matrix was constructed using vector product method, and the values of displacement and velocity of some special point including the wrist point were calculated. secondly, the working space of the robot was analyzed and the axes section of practical working space was drawn
首先，作者針對機器人的設計要求提出了多個方案，對其進行分析比較，選擇其中最優的方案進行了結構設計；同時進行了運動學分析，用d - h方法建立了坐標變換矩陣，推算了運動方程的正、逆解；用矢量積法推導了速度雅可比矩陣，並計算了包括腕點在內的一些點的位移和速度；然後藉助坐標變換矩陣進行工作空間分析，作出了實際工作空間的軸剖面。 -
On the one hand, we deduce the off - diagonal term of reduced density matrix is inner - product of two coherent states and we carry out decoherence in macroscopic limits in two special case, on the other hand, we delay decoherent time by controlling the interaction coefficient. in other part, we define two kind independent phase operators by improving two - mode squeezing coherent states in two - mode phase space and resolve their eigenstates
在第二部分中，我們在雙模相位空間里利用雙模壓縮相干態所對應的算符定義二類獨立的相位算符並相應求出本徵態，而它的產生算符和湮滅算符是通過簡諧振子的產生算符和湮滅算符經過正則變換得到的。 -
At the same time, the values " range of two kinds of nonsquare constants and their values in real inner product space are given. we also discuss the pointwise nonsquare constant in finite dimensional f space
同時給出了兩種點態非方常數的取值范圍，和實內積空間中兩種點態非方常數的值。討論了有限維l ~ p空間的點態非方常數。 -
Based on the acoustic energy flow detection, the spatial energy flow suppression can obtain time - space gain in direct proportion to time - bandwidth product, which is just the main advantage of the vector transducer
基於矢量水聽器的聲能流檢測器利用空間聲能流抵消技術相對于聲壓檢測器可獲得與時間帶寬積成正比的時空增益。 -
When mapping from design variable space to quality attribute space in the stage of concept evaluation of product design, the combing qualitative and quantitative method, rough set based mapping method and physical model experimentation based mapping method are studied. when making physical model experimentation, the transformation method of system condition is put forward for the first time
從設計變量空間到質量屬性空間的映射角度，提出了定性定量相結合的分析方法；研究了基於粗集理論的映射方法；研究了基於物理模型試驗的映射方法，並首次提出了進行物理模型試驗設計時的系統條件變化方法。 -
Based on the general conception of holography, the author analyzes the tourism region with a holographic view of human - nature relationship, and considers, in the core, the origination, development, transformation of tourism region system is a course in which the resources system is transformed to the economic system ， to the cultural system, which demonstrates by the structure of tourism region objection system ? ? from the structure of tourism resources to the structure of tourism products ， to the structure of the tourism markets ， to the structure of tourism industries, and each step of transformation needs the input of anti - entropy from the subjection system ? ? the tourists, the tourism scholars, the tourism enterprising, the tourism media, the government and the local people who urge the region sustainable development. there are six chapters in the dissertation : in the first chapter, on the base of holographic view, the author constructs a holographic space which consists of one - dimensioned time, three - dimensioned space and multi - dimensioned system, which can supply for the study of variety and multi - perspective of tourism region subsystem, meanwhile originationable theory, fractal theory and down - to - the - earth theory are put forward as methodology, what ' s more, the author constructs the paradigm of the tourism region development as the frame of region tourism development. in the second chapter, with a holographic view, some concepts of tourism region system, both objection system and subjection system, are defined again, especially, the conception of tourism, tourist, tourism resources and tourism product, the author considers, it ' s only through information that can explain how the tourism derived and developed, what the tourist demands and utility are, and the relationship between the inner subjection system is regarded as mutuality
本論文結構共分6個部分：第一部分，從全息學的基本觀點出發，構建出由一維時間、三維空間和多維系統組成的全息空間，這為研究旅遊地域各子系統的多樣性和多角度性提供了理論的依託，並將元化思考、分形理論和紮根理論作為旅遊地域開發的主要方法論，構建出旅遊地域全息開發的思維範式，為旅遊地域的開發奠定了堅實的理論框架；第二部分，從全息角度對旅遊地域系統，包括客體系統和主體系統，進行全新的界定，尤其對旅遊活動、旅遊者、旅遊資源及旅遊產品的概念進行全新界定，認為只有從信息角度才能理解旅遊活動產生、發展以及旅遊者的需求和效用，並在旅遊地域開發關繫上提出了互為主體的觀念；第三部分，從空間角度對旅遊地域進行分析，認為旅遊地域是運動的，要素運動形成要素的結構變化，進而推動整個旅遊地域的運動，同時，旅遊地域運動還受到環境系統的制約和影響，筆者還對旅遊地域相互作用關系作了較為深入的研究，認為不同等級間和同等級間旅遊地域相互作用遵循不同的規律；第四部分，通過對旅遊地域周期理論的再認識，詳細分析了影響旅遊周期的因素，並提出旅遊地域全息周期的理想模式是logistic曲線；第五部分，筆者對旅遊地域的開發模式進行了總結，從主體角度提出了4種旅遊地域全息開發模式? ?資源主導型、學者主導型、企業媒體主導型和政府大眾主導型，並從環境系統對旅遊地域開發的影響程度出發，提出2種修正模式? ?微阻礙模式和重阻礙模式；第六部分，以安西縣為例，在全息分析安西縣旅遊地域發展狀況之後，強調旅遊產品的開發與設計是旅遊地域開發的關鍵，並運用全息的觀點對旅遊產品開發進行了實證研究。
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