电磁力

Before the discovery of radioactivity, gravitational attraction and the force of electro-magnetism had been enough to explain everything.

在放射性发现以前，地球引力和电磁力似乎已足以解释每一件事情。

The rule of magnetic induction density, induced eddy current and electromagnetic force varied with high frequency sine exciting current was investigated.

利用瞬态分析方法，研究高频正弦激励电流密度在结晶器内钢液中产生的磁感应强度、感应电流及电磁力的变化规律。

The results showed that in specifically range the variety of electric current intensity and frequency remarkably affect the magnitude of magnetic field intensity .

结果表明：在特定范围内电流强度及频率的变化能显著影响到磁场强度的大小，电流强度为20 A左右时，电磁场出现磁饱和，增大电流强度，电磁力增值很小。

The Lorentz force generated in the low-conduction fluid can be used to control the boundary layer effectively.

分布在弱电介质溶液中的电磁力，可以有效地控制边界层的流动。

When charged particles move in the magnetic field, they will experience an electromagnetic force called Lorentz force which is orthogonal to both the direction of velocity and magnetic field.

当带电的粒子在电磁场中运动时，会感受到电场与磁场的作用力，这个电磁力垂直於粒子的速度以及磁场方向。

The invention relates to an optical pickup device, in particular to the optical pickup which is provided with two object lenses that are arranged around a lens supporting frame and can generate electromagnetic forces with different magnitudes correspondingly to the mass of the object lens.

本发明涉及光拾取装置，尤其是涉及在透镜支撑架周围装置有两个相对应各物镜的质量可产生大小互不相同的电磁力的物镜的光拾取器装置。

Lastly, we design a mechanical testing apparatus and tested some key components of vacuum vessel such as bellows, ports and support using photoelasticity and resistance strain gauge. From the test we have got lots of experimental data, which are very important for the design of vacuum vessel.

同时从结构动力学和疲劳设计的角度，分析了真空室的固有振型、频率及真空室在瞬时电磁力、地震载荷等动态载荷作用下的响应问题，理论给出了真空室在使役期内的疲劳用度累计损伤系数，评价了真空室的疲劳寿命情况。

The messenger of the electromagnetic force is the photon with zero mass; the weak force that accounts for radioactive disintegration and causes the sun and the stars to shine is carried by the heavy W and Z boson particles; while the strong force is carried by gluon particles, which see to it that the atom nuclei hold together.

电磁力的信使是零质量的光子，弱作用力可以用来说明辐射衰变和太阳和恒星发光，其信使是重W和Z玻色子。

Most of polar polymers possess comparatively high values of relative permittivity, which means that both bonding and non-bonding electrons in the molecular structure of these polymers can be easily displaced by external electromagnetic force.

大多数极性聚合物具有相当高数值的相对电容率，其意味着这些聚合物的分子结构中之结合与非结合电子两者，可以轻易以外部电磁力加以排出。

Though occupied with his lonely struggle to unify gravity and electromagnetism in a single mathematical framework, he watched Germany's saber rattling with alarm.

虽然一直忙于他那把引力和电磁力统一于一个单一数学框架的孤独斗争之中，他还是警觉地看到了德国对武力的炫耀。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。