Evidence of dark matter has been confirmed through the study of galactic rotation curves 通過銀河系自旋軌跡的研究已經(jīng)證實(shí)暗物質(zhì)存在的證據(jù)。
Through theoretically analyzing of moment - rotation curve of connection and seismic ductility of structure , the paper summarizes four parameter moment - rotation curve model and ductile designing methods 對節(jié)點(diǎn)的彎矩?轉(zhuǎn)角曲線及結(jié)構(gòu)的抗震延性進(jìn)行理論分析,總結(jié)了四參數(shù)的彎矩?轉(zhuǎn)角模型和延性設(shè)計(jì)方法。
For the galaxy , a model contained three components ( bulge , disk and halo ) suggested by paczynski ( 1990 ) is adopted , which can reproduce most of the global observational properties of the milky way such as the rotation curve 動力學(xué)演化的時(shí)間取為銀河系球狀星團(tuán)的平均年齡12gyr 。我們采用了三成分(核球、盤、暈)的銀河系模型( p90 ) 。
To make a rotation curve one calculates the rotational velocity of stars along the length of a galaxy by measuring their doppler shifts , and then plots this quantity versus their respective distance away from the galactic center 沿著銀河的長度通過測量它們的多普勒變換計(jì)算星系的旋轉(zhuǎn)速度的旋轉(zhuǎn)曲線,然后繪出它們分別遠(yuǎn)離銀河中心的距離。
This paper , by means of experimental study and finite element analysis , investigates the behavior of the extended end - plate connections under static loading , cyclic loading and moment - rotation curves . the main scopes of this paper includes : 1 本文通過試驗(yàn)研究及有限元分析,對節(jié)點(diǎn)的受力性能、抗震延性和彎矩?轉(zhuǎn)角曲線等方面進(jìn)行了研究,主要內(nèi)容包括: 1
The effect of uneven power and compression condition of each cylinder of diesel engine on the crankshaft instantaneous rotation ( velocity and acceleration ) curves and their interrelationship in different cylinder numbers and rotation speeds have been thoroughly analyzed by means of the crankshaft instantaneous rotation curves simulated by computer 本文通過計(jì)算機(jī)模擬出多缸內(nèi)燃機(jī)各種作功和壓縮狀況下的曲軸瞬時(shí)轉(zhuǎn)動曲線(速度和角加速度) ,詳細(xì)分析在不同缸數(shù)和不同轉(zhuǎn)速條件下,柴油機(jī)各缸作功和壓縮功不均衡對曲軸瞬時(shí)轉(zhuǎn)動曲線的影響及其內(nèi)在聯(lián)系。