查询词典 gravitation

The great English scientist Newton(1643~1727) published the book Mathematical Principles of Natural Philosophy in 1687. It sums up all his studies and brings forward the three fundamental laws of mechanics, the law of universal gravitation and the laws at celestial mechanics.

英国伟大科学家牛顿(1643~1727)在1687年版的《自然哲学的数学原理》一书总其大成，提出动力学的三个基本定律，万有引力定律，天体力学等。

Based on the fundamental theory of celestial mechanics and the discussion of two body problem under the action of universal gravitation ,the general model which can be continuously used to calculate the apparent place of celestial body in the solar system was derived. Then ,for the specific celestial body ,the material simulating method and the precision verification was given ,and the reason why the error was caused was analyzed and the corresponding method was offered .

摘 要：基于天体力学的基本理论和对万有引力作用下二体问题的讨论，推导出太阳系天体视位置长期计算的一般模型，然后针对特定天体给出了具体的仿真方法和计算结果的精度检验，深入分析了误差的产生原因并提出了相应的改进办法。

This problem, which was certainly known to the ancients, became especially acute in the seventeenth century with the invention of celestial mechanics, which first gave philosophers a certain picture of a way the world might be: it might be a world whose future states were entirely determined by the past and the laws of nature (of which Newton's laws of motion and law of universal gravitation served as paradigms).

这个从很早就被知道的问题，在十七世纪之后变得尖锐起来，因为引力力学第一次给予了哲学家一个明确的世界图景：可能世界的未来事态完全可以被过去和自然律（Newton的运动律和万有引力定律是范例）所决定。

This course introduces basic knowledge of Analytical Mechanics and theory of movement stability, and focuses on dynamics knowledge related tightly with engineering technique such as orbit moment in central gravitation field, electromechanical coupling dynamics, rigid-body dynamics, gyroscopic dynamics, manipulator dynamics et al.

本课程较系统地叙述了分析力学和运动稳定性理论的基础知识，着重介绍与工程技术密切相关的动力学知识，如中心引力场中的轨道运动、机电耦合系统动力学、刚体动力学与陀螺力学、机械臂的动力学分析方法。

That means that the universal gravitation can not supply enough centripetal force.

这说明该向心力不可能是由万有引力提供的。

A clockwise rotation causes the critical mode to occur in the area of 550 rpm and the propulsion force against the direction of gravitation vector is created.

顺时针方向旋转的关键原因模式将发生在该地区的550转速和推进武力的方向引力矢量创建。

This paper which aims at the continual occurrence of the earthquake and existence of the universal gravitation and the tide phenomenon has established the special theory-- cosmography, which considers that earthquake research should study both geography and astronomy, exceeding the traditional idea bravely.

摘 要：本文针对地震的频繁发生，结合天地间存在的万有引力与潮汐现象，大胆突破传统观念，提出了独特的研究地震需结合天文地理的"天地学"。

This paper which aims at the continual occurrence of the earthquake and existence of the universal gravitation and the tide phenomenons has established the special theory-- cosmography, which considers that earthquake research should study both geography and astronomy, exceeding the traditional idea bravely.

摘 要：本文针对地震的频繁发生，结合天地间存在的万有引力与潮汐现象，大胆突破传统观念，提出了独特的研究地震需结合天文地理的"天地学"。

AbstractThis paper which aims at the continual occurrence of the earthquake and existence of the universal gravitation and the tide phenomenons has established the special theory cosmography, which considers that earthquake research should study both geography and astronomy, exceeding the traditional idea bravely.

摘 要本文针地震的频繁发生，结合天地间存在的万有引力与潮汐现象，大胆突破传统观念，提出了独特的研究地震需结合天文地理的"天地学"。

The Newton law , law of universal gravitation , Coulomb's law , law of increase of entropy wait, all with whose elegance , general suitable and concordance give beautiful being shocked to person.

牛顿定律，万有引力定律，库仑定律，，熵增加原理等，都以其简洁性，普适性与和谐性给人以美的震撼。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。