引力的

• In 2003 , peak activity is expected to occur on 18 november . because meteoroids are unevenly distributed along their paths around the sun and gravitational pull from nearby planets may perturb their orbits , the time of peak activity and the number of meteors cannot be predicted exactly
  由于流星体是不均匀地分布在环绕太阳的轨迹上，往往受行星引力的影响而令轨道产生变化，因此要准确地预测流星雨高峰值出现的时间及流星数目是很困难的。
• It can bring errors on the impact point . sometimes the errors can reach hundreds of meters or even more . so in order to insure the precision of the missile , the disturbing gravitation is must be take into account when we calculating the ballistic trajectories
  作用在远程导弹弹道上的扰动引力对导弹落点偏差的影响是不可忽略，它对导弹落点偏差的影响可达数百甚至千米数量级，所以要保证导弹的命中精度就必须在弹道计算中考虑扰动引力的影响。
• The gravitational effect of matter caused acceleration and an unstable universe , which einstein did not want , since at the time the universe was not known to be expanding . thus einstein introduced a cosmological constant into his equations for general relativity . this term acts to counteract the gravitational pull of matter , and so it has been described as an anti - gravity effect
  当时科学家并不知道宇宙正在膨胀，所以爱恩斯坦对这样的宇宙模型并不满意，故特意在广义相对论引力方程中加入一个人工的宇宙常数，这个常数的作用，相等于一个和引力相反的排斥力，以抵销引力的作用。
• In this paper , we not only analysed the different effects of the disturbing gravitation on the trajectories of different ranges , but also discussed shortcomeings of the spherical harmonics model by which the external gravitation potential of the earth is shown usually . when the model is applied directly to the calculation of the trajectory , since the recurrent calculation can not be avoided , an increase in orders of model will result on a decrease in the speed of calculation
  本文重点分析了扰动引力对不同射程导弹的落点偏差的影响，并且讨论了原有计算扰动引力的球谐函数法在计算速度上的缺陷(由于勒让德函数的递推计算，使得随着模型阶数的增加模型的计算速度下降) ，然后对其进行改进使其能更好的适用于弹道计算。
• In newtonian mechanics , we say the moon is attracted by the earth , so it orbits around the earth . in the theory of general relativity , we will say the earth affects the spacetime around it , thus the moon is no longer moving in a straight line , instead it goes around the earth . just like a marble will not move in a straight line on an uneven table
  牛顿力学认为月球绕地球旋转，是因为月球受到地球引力的吸引但广义相对论的说法则是地球的质量扭曲了附近的时空，月球在不平坦的时空以最自然的方式运行，结果走出了一条绕著地球转的曲线，情况就如弹珠在不平坦的地面走，会左摇右摆一样。
• Using the expression of the quadrupole and octapole radiation power , the multipole radiation power of a special binary star , psr1913 + 16 , are estimated . the results show that its whole power of quadrupole radiation is , which is coincident with the observed results , and that the expected whole power of octapole radiation is
  本文用所得到的引力的四极和八极辐射的功率表达式计算了psr1913 + 16脉冲双星的多极引力辐射，其四极辐射的总功率数量级为，与已经观测到的间接结果是一致的。
• This paper presents some concepts such as required gravitation , negative required gravitation , required resultant force and decision - making gene etc . , describes and analyses required theory in form of required gravitation , founds the model and method of decision - making required resultant force , lists the analyzed casts and presents the evaluate guide line
  提出了需求引力、负需求引力、需求合力、决策因子等概念，以需求引力的形式来描述与分析需求理论，建立了基于需求合力的决策模型与方法，给出了分析案例，提出了决策评价准则。
• The classical theory of gravitational radiation and the quantum theory of it in weak field situation are fully discussed by many authors , but few of them studied on simplifying the methods to deal with the gravitational radiation and on the consistence between corresponding classical and quantum methods
  对于引力辐射的经典理论和弱场下引力辐射的量子理论各国学者虽然已有很多讨论，但采用较为简洁的经典方法和量子方法讨论引力的多极辐射并给出二者自洽性的研究却并不多见。