環動半徑 的英文怎麼說
中文拼音 [huándòngbànjìng]
環動半徑
英文
radius of gyration-
This article takes the lagrange equation as the principle, establishes mathematics modeling to the inertia brake vibration when it brakes, then simulates it with matlab. this paper educed the relation equations between, which are the inertia brake ' s friction coefficient of the brake ring and the friction disk, the mean radius, the braking force, rotation inertia of the driving top and the spline shaft, spiral climbing angle of the brake ' s concave - convex helicoid, the mean effort radius of the concave - convex helicoid, elasticity coefficient of the spring, quality of the driving top and the spline shaft, rotations inertia of the brake ' s rotation part besides the driving top and the spline shaft, suppresses sleeve. provides the theory basis for the inertia brake structure optimization
本文以拉格朗日方程為理論基礎，對慣性制動器在制動時的振動進行數學建模，然後用matlab對其進行模擬，得出了慣性制動器在制動時振動角頻率分別與制動環和摩擦片之間的摩擦系數、制動力的平均半徑、主動頂和花鍵軸的轉動慣量、慣性制動器的凹凸螺旋面的螺旋升角、凹凸螺旋面平均作用力的半徑、彈簧的彈性系數、主動頂和花鍵軸的質量、慣性制動器除主動頂和花鍵軸外其他部分的轉動慣量和、頂壓套的質量等慣性制動器各零部件的物理參數之間的關系，為慣性制動器的結構優化提供了理論依據。By means of the optimization method - punishing function method and taking the sum of the planet gear radius and center distance as the target function, the parameters of drive are optimized. by using the optimization program, the initial serial studies of drive are completed, the best serial parameter value of the drive is given
採用外點罰函數優化方法，通過取行星輪半徑和中心距之和作為優化目標函數，對滾錐齒超環面行星蝸桿傳動進行了參數優化，運用此優化程序，初步完成了對該種傳動的系列化研究，給出了傳動系列的最佳參數取值。Over the years, lrt technology has been upgraded to counter the negative effects of traffic jams, noise, environmental damage, air pollution, etc. featuring a small radius of curvature, multiple car units, modulated train set, enlarged cars both in transverse and longitudinal directions, low car floors, streamlined car design, advanced control systems, and flexible right of way, modern lrt systems have been successfully adopted to most environmental and social needs. they adequately display their merits as transportation systems ; i. e., the lrt system is able to co - exist with automobiles. the low car floor means that roads can act as station facilities, and passengers can get on and off the cars in the street
輕軌運輸系統lrt源起於歐洲街道電車street car ，街道電車一度在都市捷運化與私人機動化的浪潮沖擊下迅速沒落，但隨著都會地區機動車輛不斷增加，道路交通阻塞噪音環境破壞排放廢氣污染問題嚴重惡化之際，輕軌車輛技術已不斷提升，具備小轉彎半徑能力的聯結式車廂模組化列車編組車廂斷面長度加大加長低地板車廂流線型車廂設計，搭配先進控制系統及彈性的路權型式，使現代化輕軌系統具備有與生活空間結合重視環境問題與社會情勢並活用進化街車之都市交通工具等特徵與優點，如高性能輕軌列車與汽車共存，低底盤的車廂創造無障礙車站空間，道路即是車站設備，旅客可以在街區上下車，提供沿線居民高度的便利性，消除交通堵塞噪音及空氣污染等，輕軌系統並與街景充分的調和，成為活動的都市意象。According to guinness world records primetime, the central to mid - levels escalator is the world s longest outdoor covered escalator being 800m in length, with 20 sections, stretching from connaught road central to conduit road in mid - levels
中環至半山自動扶梯全長800米，共有20段，由干諾道中伸展至半山干德道，是前往荷南美食區及荷李活道的最佳途徑。Based on the analyses, it was found that if the subsurface warm pool is regarded as the beginning point, the warm or cold signal propagates initially eastward and upward along the equatorial surface of msta to the eastern pacific and stays there several months and then turns north, usually moves westward near 10 to western pacific and finally propagates southward to return to warm pool to form an off - equator closed circuit. it takes about 2 to 4 years for the temperat ure anomaly to move around the cycle. if the smta of warm ( cold ) water is strong enough, there will be two successive el nino ( la nina ) events during the period of 2 to 4 years
） a事件下/負海溫距平信號的分佈和傳播「軌跡」 ，發現如果以暖池次表層為起點，則一般來說，暖水或冷水先是沿赤道的極值深度面向東、向上「傳播」或運動，到達赤道東太平海盆邊界附近后，分別轉向向北和向南運動，然後在南、北緯10左右再折向西運動，並在暖池的經度范圍內再作經向運動傳到暖地，即在南、北半球以赤道為一邊， 「傳播」或運動路徑形成扁的閉合環路，溫度距平運動一圈需時2 - 4年。分享友人