閉星形 的英文怎麼說
中文拼音 [bìxīngxíng]
閉星形
英文
closed star-
In recent years, with the rapid development of information technology, modern distance education system, which is based on satellite communications, wired television network, telegraphic communication and internet, comes into being. unesco ( united nation educational scientific and culture organization ) point out : " the rapid development of new information and transmittable technology will transform progress and approach of knowledge.
近年來，隨著現代信息技術的飛速發展，以衛星電視和閉路電視網、郵電通訊網以及internet為基礎的現代遠程教育體系正在形成，聯合國教科文組織指出： 「新的信息和傳播技術迅速發展，將進一步改變知識的發展，獲得知識的途徑」 。A comet with an open orbit will only visit the sun once. however, a comet with a closed orbit actually it is elliptical will visit the sun again and again
以開放式軌道繞日運行的彗星只會經過太陽一次，但封閉式軌道彗星即橢圓形軌道則可造訪太陽多次。Using quaternion as attitude representation, the attitude kinematics function is established. 2. several kinds of disturbance torques affecting the satellite attitude are directly computed through the models described in the paper, forming a closed loop stabilization system dumped by magnetic torques and provided with initial torques through flywheels, but other simulations only estimate it by experience
（ 2 ）很多模擬是根據經驗估算衛星所受的干擾力矩，本文以某對地觀測小衛星為背景，利用所建力學模型對衛星所受數種干擾力矩進行計算，形成了一個以飛輪作為主動力矩、通過磁力矩卸載的閉環而且穩定的姿態控制系統。
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