星狀小體 的英文怎麼說
中文拼音 [xīngzhuàngxiǎotǐ]
星狀小體
英文
asteroid body-
In the stage of the sun and the moon in sight, azimuth of the sun, the earth and the moon in the spacecraft body coordinate system is simulated. combining the simulated azimuth with the ephemeris of the sun and the moon, the state equation and observation equation are modeled. the initial orbital parameters calculated by least square method are used in orbit state equation to predict spacecraft state and to realize autonomous navigation
在日月可見階段，模擬日、地、月敏感器測量信息，即日、地、月在航天器本體坐標系下的方位信息，結合日月星歷，建立狀態方程及觀測方程，通過最小二乘法得到歷元時刻的軌道狀態初始值，將其代入軌道狀態方程進行自主導航。Smaller groups of stars called globular clusters often surround spiral galaxies
稱作球狀星團的小型恆星團體經常環繞在旋渦星系周圍。A small nugget of cold molecular hydrogen, called a bok globule, is silhouetted against the star cluster
一個叫「博克球狀體」的冷氫「小金塊」逆著該星團形成剪影。A million stars are crammed into a volume a few dozen light - years across ; an equivalent volume near the sun would accommodate only a hundred stars
球狀星團在直徑幾十光年的體積內，塞入了100萬顆恆星；而太陽附近同等大小的體積內，卻只有100顆恆星。So the city development of kunming shall radiate to whole of our province to be in charge of the important historic task to promote the city distribution in yunna and push the development of other middle and small cities. this article has analyzed the chance of kunming city development, international environment, tendency of city development in the world as well as the present situation of chinese cities and proposed a network city project, in which a primary city, 3 secondary cities and 20 small towns shall compose a city distribution system, from the aspects of objective condition and concrete operation mechanism. further, this network city project suggests to, as main point, program and develop three secondary cities, anling, yiliang and songmin, and small towns, and to disperse part of property of the prima ry city and decompose the city function
於是昆明市城市發展將幅射全省，擔負起促進雲南城市化進程、推動其他中小城市興起的艱巨歷史使命，本文在對世界城市發展趨勢及我國城市目前的現狀，以及昆明城市發展面臨的機遇、國際環境與存在的問題進行分析之後，從宏觀體系和具體運作機制方面提出了按一座主城、三座次級城市、縣城和20座衛星小城鎮的城鎮體系布局，構建網路城市，重點規劃發展安寧、宜良、嵩明三座次級城市，並疏散部分主城的產業和分解城市功能。Moreover, in our work, it was found that the pbs nanoparticles were formed by using other sulfur source or a ph value less than 7 in the hydrothermal method. when using pbso4 and na2s as reactants, the autoclave was maintained at 200c for 20h, the products were pbs nanorods
以醋酸鉛和硫脲為先驅體， ph值大於10 ，在200下反應24小時，是制備pbs星狀結構的最佳條件；改變硫源或體系ph值小於7時，所得產物均為pbs納米顆粒。分享友人