自轉軸 的英文怎麼說
中文拼音 [zìzhuǎnzhóu]
自轉軸
英文
[天文學] rotation axis; axis of rotation自轉軸進動 rotational axis precession-
The prime meridian, which runs through greenwich in south - east london, became the basis for the world ' s time keeping in 1884 after the first astronomer royal, john flamstead, calculated that the earth rotated on its axis once every 24 hours
1884年，首位皇家天文學家約翰法蘭姆斯坦算出地球每隔24小時繞軸自轉1次，使得通過倫敦東南格林威治的本初子午線成為全球計時基準。The earth rotates once a day on its axis.
地球繞它的自轉軸一天旋轉一周。Birds and compasses know north from south because, like a giant bar magnet, the earth ' s magnetic field has two poles that line up closely with the planet ' s axis of rotation
候鳥與指北針都知道何為北方、何為南方，因為地球就像一條巨型磁鐵棒，它的磁場有兩極，且這兩個地磁的磁場線和地球的自轉軸非常接近。Lack of orthogonality between a suspension(or centering)axis and the spin axis will then result in a drift-producing torque exerted on the gimbal.
懸掛軸和自轉軸間的不垂直度將引起產生漂移作用在框架上的力矩。The rotation of the core generates the magnetic field of the earth. the magnetic axis does not coincide with the spin axis and it does not pass through the earth s center
地心的旋轉產生了地球的磁場，有趣的是，磁軸不單和地球自轉軸不一致，而且並不穿過地球的中心。When electrons move in spirals around magnetic lines of force, radio waves are produced and radiated out along the two magnetic poles of the star. usually, the rotational axis of the neutron star does not align with the magnetic axis. the radiation beams will sweep around and create the
通常恆星的自轉軸和磁軸並不一致，中子星亦不例外，所以沿著磁軸向外發射的無線電波束，在中子星自轉的帶動下，便會如燈塔般向宇宙掃射，這便是著名的In addition, spin-bearing life is sharply reduced at higher operating speeds.
此外，在較高的運行速率時，自轉軸承的壽命急劇下降。We had observed more than ten selected asteroids using 1 - meter telescope in yunnan observatory during 2000 to 2002. the observational data of seven asteroids had been reduced and analyzed. we have derived their synodic periods and estimated the shape and orientation of rotational axis for one asteroid
為此，我選定了一些直徑在125公里左右的小行星進行觀測和分析；一方面，測定它們的自轉周期，進行「角動量衰減」現象的研究，另一方面，對小行星形狀和自轉軸指向進行估算，為小行星碰撞演化研究提供更為有利的證據。The orientation of the equatorial belt suggests the parent star maintained the same spin axis both before and after it exploded
環赤道帶的方向說白，前身星在爆發前後的自轉軸取向保持不變。Planets revolve about the sun and rotate on their axis.
行星在圍繞太陽旋轉的同時，也繞著它們的自轉軸自轉。Locations on the earth's surface are specified in terms of the earth's axis of rotation.
地面的定位是沿著地球的自轉軸而定的。The tilt of the earth's axis, not the shape of its orbit, is what is responsible for the seasons.
形成季節的主要因素不是地球公轉軌道的形狀，而是地球自轉軸的傾斜。Almost parallel to the orbital plane
自轉軸幾乎和公轉平面平行In particular, every electron has its own magnetic field aligned with the axis of its spin
特別是每個電子自身都會產生與其自轉軸相一致的磁場。For the earth, the rotational axis tilts 23. 5. as a result, there is no seasonal change in venus
地球的自轉軸傾角為23 . 5 ，所以金星並沒有四季之分。As the earth spins on its rotation axis, it wobbles like a top, slowly swinging the northern hemisphere closer to and then farther from the sun
當地球自轉時，自轉軸會像陀螺一樣晃動，因此北半球與太陽的距離會逐漸接近，繼而遠離。Since the rotational axis of the earth is tilted from the revolution axis by 23. 5, the sun, for example, rises at different directions at different times during the year
由於地球的自轉軸相對于公轉軌道平面傾斜了23 . 5度，再加上地球的繞日運動，所以太陽東升的方位角會隨日子改變。Like a spinning top, the rotational axis of the earth is not fixed in space. it will move in a circle with a period about 26000 years. we call this the
像轉動中的陀螺一樣，地球的自轉軸在太空中其實並不固定，而是以26000年的周期在轉動，這個運動稱為Besides, by reason of its long distance from jupiter, the earth can maintain a rather circular orbit. also the gravitation of the moon can stabilize the tilt of the rotational axis of the earth, thus restricting climatic fluctuation within a narrow range
另外，地球因與木星保持距離，能維持著一個幾近圓形的軌道，加上月球的引力穩定了地球自轉軸傾斜的角度Since the elliptical orbits of the moon and the earth and the tilt of the earth s rotation axis also affect the forces exerted by the moon and the sun on the earth, the highest and lowest sea levels associated with spring tide are different from month to month
此外，由於月球運行及地球公轉的軌道呈橢圓形，及地球自轉軸傾斜的影響，令月球和太陽的引力出現變化，因此，每月的大潮所引致的水位變化亦有所不同。分享友人