lower pair 中文意思是什麼

A pair of razorsharp incisor tasks jut forward from the lower jaw and grind against two blunter versions in the upper jaw.

象剃刀那樣鋒利的一對門牙從下顎向前突出，可以與上顎的兩顆較粗鈍的牙對稱嚼食。

Based on the fact of driven gear moving prior to normal locality when driving gear pair moving from upper dead center to lower dead center, considering all influential elements, the maximum backlash of gear pair can be controlled to satisfy the special driving requirement through controlling the length and deviation of its common normal without increasing its manufacture precision

摘要根據換向傳動齒輪副從上止點向下止點運動時被動齒輪運動超前的實際，從影響齒輪副側隙的各種因素出發，在不提高齒輪副製造精度的前提下，通過拉制齒輪副公法線長度及其偏差從而有效地控制齒輪副的最大齒側間隙，以滿足傳動的特殊要求。

Since economic development and ecological environment is not inherently a pair of contradictory elements, the former does not necessarily intend to sacrifice the latter. on the premise that economic development is not hampered, proper environmental economic measures shall be taken to lower the level of kuznets curve, therefore the synchronization of economic growth and ecological environment improvement can be definitely accomplished

經濟發展與生態環境並非天生的一對矛盾體，經濟發展並非一定要以犧牲生態環境為代價，在不阻礙經濟發展的前提下，採取適當的環境經濟手段促使環境庫茲涅茨曲線變得低平，完全可以實現經濟增長與生態環境改善的同步。

This dissertation investigates both existence of traveling wave solutions for delayed reaction diffusion systems and lattice differential equations, and global attractor of spatially discretized fitzhugh - nagumo equations with dirichlet or neumann boundary conditions. for delayed reaction diffusion systems, the existence of traveling wavefronts in diffusive and coorperative system with time delays is provided, firstly ; the monotone iteration scheme, together with upper - lower solution technique, is applied to establish the existence of traveling wavefronts of delayed reaction diffusion systems with some zero diffusive coefficients. secondly, schauder fixed point theorem is applied to some operators to prove the existence of traveling wave solutions in a properly subset equipped with exponential decay norm, which is obtained from a pair of upper and lower solutions for delayed reaction diffusion systems with non - quasimonotoiiicity

對于時滯反應擴散方程，我們先利用吳建宏和鄒幸福[ j . dynam . diff . eqns2001 （ 3 ） ]中的主要定理來研究時滯競爭擴散lotka - volterra系統波前解的存在性，給出了這個定理在非線性項滿足弱擬單調條件（ qm * ）時在系統情況中的應用；並利用單調迭代方法和上、下解技術，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理。

According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。

After designing oil ditches on the surface of its arc - block, increase friction factor and make sure self - lock which solves above problem. do qualitative analysis to lower pair and one - way overrunning clutch and inner star - wheel - roller overrunning clutch by using self - made lever loader. the experiment shows : on the same condition, the deformation of new overrunning clutch ’ s surface contact with lower pair is smaller than the deformation of roller overrunning clutch ’ s line contact with higher pair and new overrunning clutch ’ s skid angle is smaller

對低副單向超越離合器的部件進行了加工製造，在超越離合器弧塊表面創新設計加工排油溝，增大摩擦系數，保證實現自鎖，解決了很多離合器工作過程中容易出現無法自鎖的問題;對低副單向超越離合器和內星輪滾柱超越離合器用自製杠桿加載器做了定性分析，實驗表明:相同條件下，新型離合器低副面接觸比滾柱離合器高副線接觸變形小、溜滑角小。

" on another occasion, " continued steiner in still lower tones, " leonide got her tenor down to montauban. she was living in the chateau de beaurecueil, two leagues farther off, and she used to come in daily in a carriage and pair in order to visit him at the lion d or, where he had put up. the carriage used to wait at the door, and leonide would stay for hours in the house, while a crowd gathered round and looked at the horses.

「還有一次， 」斯泰內悄悄說道， 「萊奧妮德把她的男高音歌手叫到蒙托邦，她自己住在兩法裡外的博爾科的別墅里，她每天乘坐一輛兩匹馬拉的敞篷馬車，到他下榻的金獅旅館去看他，她在旅館門前下車車子停在那裡等她，萊奧妮德一呆就是幾個小時，一些人聚集在那兒觀看那兩匹馬。 」

With time - evolution - operator, it is proved that the population of upper level is in circumstance of cyclic oscillation by laser pulses pair of gaussian line - shape in a homogeneous broadening two - level system. the oscillatory time oxide is the delay time between the laser pulse pairs and the oscillatory frequency equals the one of transition between the lower and upper level

引入時間演化算符，證明均勻增寬二能級體系在飛秒激光脈沖對作用下上能級激發態布居是周期性變化的，它以飛秒脈沖對之間的延時為時間軸，以該原子能級之間的躍遷頻率為振蕩頻率

By the use of incidence matrix of lower - pair mechanism this paper studied a concrete method on synthesizing various typed higher - pair combinatorial mechanisms. a verification has been carried out on this method through living examples

研究了利用低副機構的關聯矩陣綜合各種類型高副組合機構的具體方法，並且通過實例對該方法進行了驗證。

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。

Upper control system is developed in windows environment using visual c + + and access database. it communicates lower control system through rs - 485 twisted - pair with exclusive communication protocol

上位機控制系統軟體採用visualc開發access后臺數據庫，上位機的系統結構主要包括與下位機的串口通訊和對后臺數據庫的操作。

Exchange for a pair of sandals, the color change feet, tu nail polish, wears detainees, and wears foot ring, diamond, etc., dress properly lower right done to show your friends

可以換涼鞋改變腳的膚色塗指甲油戴腳鏈戴腳戒鑲鉆等等，打扮好點右下角「 done 」展示給你的朋友看。

Firstly, we study the periodic parabolic equations with delays by using the method of upper and lower solutions and its associated monotone iterations, it is shown that the reaction function in the system possesses a quasi - monotone property and the periodic boundary value system has a pair of coupled t - upper and lower solutions then the periodic boundary value problem has a pair of periodic quasi - solutions and the sector between the quasi - solutions is an attractor of the delayed periodic parabolic system

首先，我們研究含時滯的周期拋物型方程組應用上、下解方法及相應的單調迭代方法，證明：如果反應項混擬單調且方程存在周期上、下解，則方程一定存在周期擬解，並且擬解構成的區間是一個吸引子。

The mutual transformation of this pair of contradictions can push the coordinated development of hydropower development and ecologic environment protection to rise from a lower level to a higher level and can cause human beings to achieve a new life in understanding and transforming the world and in the continual balance between human beings and nature

兩者間不斷地轉化，推動了水電開發與生態環境協調發展不斷地由低級向高級提升，使人類在認識世界和改造世界過程中、在人與自然的不斷平衡中獲得新生。

I asked the lower sight department of the tongren hospital to make a pair of mini telescope for me

給我一個小小的家，只是小小的家，一個屬于自己溫暖的蝸牛的家。

Just defines a pair of methods to return both lower and upper bounds for the wildcard type

只定義了兩個方法，返回通配類型的下界和上界。