引力

Based on these results, it is reasonable to assume that cationic surfactant could form well-stabilized films on the surface of partially hydrated polyacrylamide solution, as a result a kind of surface active complex was formed between cationic surfactant and HPAM.

总之，本论文系统研究了阳离子表面活性剂和不同水解度的聚丙烯酰胺之间的相互作用，发现阳离子表面活性剂能在HPAM水溶液表面成膜，这和表面活性剂的HLB值有关，还与HPAM的水解度以及溶液的pH值有关；两者之间的静电引力是主要驱动力，这一过程又被表面活性剂链之间的疏水相互作用所增强。

This paper firstly analyses the limitations of traditional potential field methods in dynamic environment,and based on this analysis,the traditional potential field is improved by introducing the concept of velocity potential field .

分析了传统势场法在动态环境下的不足，并在此基础上引入了速度势场的概念，改进了传统的势场函数，推导出新的引力函数和斥力函数。

The overall average abso-lute deviations invapor pressure,liquid volume,vapor volume and heats of vaporization are 0.60%,1.84%,3.26% and 3.36% respectively.

并经过全面的分析计算比较，选择了合理的引力项和体积平移项的温度函数表达式。

Using trade gravitation model test and analysis,the main factors which decide bilateral trade in 2003 are: trade partner's GDP,space distance,population and system arrangement.

通过采用贸易引力模型从实证角度分析验证：决定东北亚各国2003年双边贸易状况的主要因素是：贸易伙伴的经济规模、空间距离、人口和制度安排。

Precise measurement of the Newtonian gravitational constant G plays important roles in the fields of the gravitation, geophysics, astrophysics, and cosmology. A torsion balance with timeof-swing method to determine the gravitational constant G is proposed.

Torsion balance ；万有引力常数G的精确测量不仅对于弄清引力相互作用的性质非常重要，而且对于整个理论物理学、地球物理学、天文学和宇宙学等都具有重要意义。

This natural telescope is a gravitational lens.

这个天文的望远镜就是引力透镜。

Earth's surface because the gravity of the water thus gathered.

因为这些引力地球表面的海水因而聚集。

This, along with the lower surface gravity, may account for the Tharis bulge and its enormous volcanoes.

正因如此，再加上较低的表面引力，可帐户Tharis隆起及其巨大的火山。

Lunar Pro ector ma ed the Moon's surface composition, gravity and magnetic fields.

月亮探测器把月球的表面情况，引力及磁场都绘制成了地图。

Then, over hundreds of millions of years, volcanic eruptions returned the gases to Earth's surface, where gravity kept them from drifting off into space.

后来在几亿年的时间里，火山爆发使气体返回到地球表面，地表引力阻止了气体飘向太空。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了