ring block 中文意思是什麼

The main results are listed in the following : it is proved that the ring consisting of all block circulant matrices over a field is isomorphic to a factor ring of a polynomial ring in multivariables over the same field

具體內容如下： ?證明了域上的所有塊循環矩陣組成的環同構于其上的多元多項式環的一個商環。

Study of intelligent testing system of mhk - 500 ring - block tribometer

500環塊摩擦磨損試驗機智能測控系統的研製

1. 5 m in diameter ) were dispersed in n46 engine oil with different concentrations using ultrasonic respectively in order to study their tribological properties. the tribological experiments were carried out by mq - 800 four - ball tribometer and mm - 200 ring - on - block tribometer, in which extreme pressure properties, wear scan diameter, friction coefficient and wear volume loss were measured. the results showed that oil containing mos2 nanoparticles had a better wear resistance, friction - reducing and extreme pressure than the oil containing common mos2

將上述制備得到的納米二硫化鉬顆粒和普通二硫化鉬粉末（ 1 . 5 m ）以不同濃度分散在n46機械油中，在mq - 800四球摩擦磨損試驗機上考察它們的最大無卡咬負荷（ p _ b值） 、耐磨性能和摩擦系數；並在mm - 200摩擦磨損試驗機上，通過環?塊摩擦副，比較和分析了它們的摩擦學特性。

So finding the minimal polynomial of a block circulant matrix is transformed into computing the reduced grobner basis of a kernel of a ring homomorphism

因此，將求域上塊循環矩陣的極小多項式轉化為求一個環同態的核的簡化gr （

" both primary and mating ring are made of solid - block construction for greater reliability and longer service life compared to the soldered, welded or sprayed hard - face designs used by other manufacturers.

與其他製造商所採用的低溫焊接、熔焊或噴射硬面設計相比，主密封環和配套密封環均採用固體單元結構，可靠性更高，使用壽命更長。

Tensile stress field would appear in the proximity of arched vault after excavation, slacking of surrounding rock and subsequent dropping of blocks of rock from such area would possibly occur at any time in the context of extra - shallow depth. so i - steel arched support must be erected to provide against possible block dropping and be integrated into a ring with that of pilot tunnels on both sides

拱頂在核心土開挖后，在一定范圍內出現拉應力區，在超淺埋情況下極容易掉塊和發生圍巖松馳，因此核心土必須邊開挖邊架設工字鋼拱架，使之與左右導洞拱頂工字鋼形成整體。

Standard test method for ranking resistance of plastic materials to sliding wear using a block - on - ring configuration

用環形結構塊料給塑料材料的抗滑動磨損特性分等的標準試驗方法

Metallic materials - wear tests block - on - ring wear test

金屬磨損試驗方法環塊型磨損試驗

Metallic materials - wear tests - block - on - ring wear test

環塊型磨損試驗

Standard test method for calibration and operation of the falex block - on - ring friction and wear testing machine

法列克司環塊磨擦試驗機和磨損試驗機的校準和操作標準試驗方法

Ring tenison distributions were also measured using a specially devised block

同時採用一種特別設計的推塊測出了環拉力的分佈。

Chapter 4 explores the multi - level pipeline - controlled parallel mechanism and parallel performance of multi - sharc system. then the parallel data block - processing scheme for distributed multi - dsp ring network system is introduced in view of dsps " macro pipelines and operating pipelines

提出了在考慮到操作流水線和宏流水線的影響下，數據塊并行處理策略在基於環網結構的分散式多sharc系統中的新應用。

The friction and wear behavior of the nanocomposites sliding against aisi - 1045 steel under water - lubricated condition and dry condition was examined on an m - 200 test rig in a ring - on - block configuration

採用m - 200型環-塊摩擦磨損試驗機研究了復合材料在水潤滑與干摩擦條件下的摩擦磨損行為，對摩材料為45 ~ #鋼。

Using the theories of probability, algebra and number theory comprehensively, we investigate a class of boolean functions with three - valued walsh spectrum in the first part of this dissertation : the properties of the extended semi - bent functions, which are constructed from any two bent functions, are studied, followed by the structure characteristics of the boolean functions satisfying propagation criterion with respect to all but two vectors ; the definition and cryptographic properties of k - order quasi - bent functions are proposed whose walsh spectrum takes on only three values. some sufficient and necessary conditions are offered to decide whether a boolean function is a k - order quasi - bent function ; a special method is presented to construct the k - order quasi - bent functions, whose cryptographic properties are explored by the matrix method, which is different from the method of walsh spectrum and that of autocorrelation of boolean functions ; the application of this kind of boolean functions in the fields of stream cipher, communications and block ciphers is discussed, which shows the great importance of the fc - order quasi - bent functions ; some methodology are proposed to construct the k - order quasi - bent functions, including the complete construction by using the characteristic matrices of boolean functions, and the recursive method by two known k - order quasi - bent functions we further extend our investigation to the ring zp, where p is a prime, and the similar results are presented as far as the p - valued quasi - generalized - bent functions are considered

本文首先綜合運用概率論、代數學、數論等基礎學科的理論知識，並以頻譜理論作為主要研究工具，對一類譜值分佈相對均勻的函數? ?廣半bent函數、 k階擬bent函數和p值k階擬廣義bent函數進行了系統、深入的研究，給出了廣半bent函數定義，並探討了廣半bent函數的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的定義及等價判別條件；討論了k階擬bent函數和p值k階擬廣義bent函數與部分bent函數和p值廣義部分bent函數的關系，探討了它們的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的典型構造方法，並將對k階擬bent函數的密碼性質的研究轉化到對一類特殊的矩陣的研究上；利用布爾函數的特徵矩陣原則上給出了k階擬bent函數的一種完全構造方法，還給出了從已有的p值k階擬廣義bent函數出發，遞歸構造變元個數更多的p值k階擬廣義bent函數的方法；初步探討了k階擬bent函數在序列密碼、分組密碼以及通信中的應用；給出了一類布爾函數walsh譜的分解式，並利用這類布爾函數的walsh譜分解式給出了一類近似穩定的布爾函數的構造，特殊情形下為k階擬bent函數；利用代數數論的知識考察了p值k階擬廣義bent函數的譜特徵，並給出了k階擬廣義bent函數與所有仿射函數的符合率特徵等等。

The special ring - type with three - dimensional depth of a product of function of the products is filtered layer, can stop sand one above 0. 06mm, and is developing into the steady sand cake constantly, form the protective screen of the second dish of sand control, it is particularly remarkable to block sand performance

產品作用本產品特殊的具有立體深度的環狀過濾層，能阻擋0 . 06mm以上的砂粒，並不斷發展成為穩定的砂餅，形成第二道防砂屏障，擋砂性能尤為卓越。

The at 2 scale based on the internal area - time lower bound of the viterbi decoder is analyzed. and the at 2 scales of three vlsi realization algorithms ( m - step decoder algorithm, flow and block decoder algorithm, and sliding block decoder algorithm ) are deduced. in succession, a fully new algorithm named ring - vd algorithm designed by ourselves is put forward, and its at 2 scale is also fetched

分析並推導了viterbi譯碼器基於內部信息流的vlsi面-時下界at2尺度;推導了已有的三種viterbi譯碼器的vlsi高速實現演算法（ m步譯碼演算法、流水式塊譯碼演算法和滑動塊譯碼演算法）的at2尺度;提出了一種新的環形vd演算法，並推導了它的at2尺度;對四種viterbi譯碼器的vlsi高速實現演算法進行了比較分析。

The paper designs a lower pair and one - way overrunning clutch. because its arc - block, outer ring, roller, slide - block and output shaft contact by lower pairs, they overcome higher pairs ’ shortcomings such as wearing easily, bad resistance to impact, bad bearing capacity and so on

本文創新設計了一種低副單向超越離合器，其弧塊與外環，弧塊與滾柱，滾柱與滑塊以及滑塊與輸出軸之間都是以低副聯接，克服了高副易磨損、耐沖擊性差，承載力低等缺點。

After analyzing the characteristic of the parallel processing system, some problems about design missile - carrying processing system are pointed out ; network in the parallel processing system has become bottleneck and affect the performance of system, so the processing efficiency is analyzed in a multiprocessor system based on cluster - bus and some rules in designing the network in the multiprocessor system are brought out ; genetic algorithm is used for scheduling in the multiprocessor system, and a scheduling algorithm is described to suit arbitrary number of tasks, unequal task processing time, arbitrary precedence relation among tasks and arbitrary number of parallel processor, so that the schedule length will be minimized ; finally, an atr algorithm is mapped to a ring multiprocessor system, and a block diagram using dsp device is constructed. in chapter 4, the study is performed on real - time system hardware realization of atr. tms320c80 is selected as the kernel processor in multiprocessor system

為此，對一種由常用的dsp晶元組成的多處理器系統的處理器利用率進行了分析，提出了多處理器系統互連網路設計的基本原則；本章使用遺傳演算法作為實現多處理器調度的工具，提出了一種新的任務調度演算法，該演算法主要是為了解決在任務數任意、任務計算時間不相等、任務前趨關系任意、以及任務間存在通信和考慮任務存貯器要求的情況下，如何優化任務在各個處理器上的分配和執行順序，使得多處理器系統總的執行時間最小；最後對一個目標識別演算法進行了硬體實現優化分析，根據分析結果，將演算法映射到由dsp晶元組成的環形網路連接的處理器拓撲結構上，得到了多處理器系統的原理框圖。

We are located in shanghai two blocks east of the outer ring road ( west ), and one block south of the yan an elevated freeway, not far from the wuzhong road and lianhua road intersection

我們公司坐落於外環線以東兩個路口和延安路高架以南一個路口的地方，離吳中路/蓮花路交界處不遠。

The friction tests of the film of the aligned carbon nanotubes were performed using a block - on - ring friction tester and using friction force microscopy ( ffm ) and atomic force microscopy ( afm )

利用摩擦力顯微鏡（ ffm ）和原子力顯微鏡（ afm ）對多孔aao模板上的定向納米碳管薄膜在納牛頓條件下的摩擦性能進行了初步研究。