磁场减弱

在逆转期间，主磁场减弱，几乎为零，然后以相反的磁极重新出现。

During a reversal , the main field weakens , almost vanishes , then reappears with opposite polarity .

强场下，各支声子对极化子回旋质量贡献随场强的变化性质及其压力效应与弱场时随磁场减弱的变化性质相同，但符号相反。

The properties of the contributions to the PCM from different branches of phonons varying with strong magnetic fields and their pressure effect are the same and negative with that for weak magnetic fields .

周围的磁场已经开始减弱了。

The magnetic field around it is already beginning to weaken .

目前，磁场强度正在减弱，此外，操纵这一切的机制仍然没有完全理解好。

At the present time , the field strength is decreasing . Again , the mechanisms driving all of this still not understood very well .

由于中子和正电子的磁矩恰好和质子和电子的磁矩反号，故减弱了太阳内部的固有磁场，从而减弱了太阳的活动。

The inner magnetic fields of the sun is then weakened and solar activities are slowed down because magnetic moments of neutron and positron are opposite to that of proton and electron .

随定向凝固速度提高，磁场的作用逐渐减弱。

The effect of the magnetic field on the growth of crystal decreases with increase of growth speed .

量子阱的限制势随磁场的增强而减弱从而使得系统由二维向三维形态转化，并引起等离子体频率增加。

The quantum well confining potential decreases as the magnetic field increases . This has led to the changeover to a 3 dimensional system and the increase of the plasmon energy . 3 .

研究表明，脉冲频谱会随着外加磁场的增加而展宽，磁场有助于减弱光纤非线性的偏振依赖性。

With the increase of magnetic field , the pulse spectrum can be broadened and the polarization dependency of nonlinearity reduces .

结果表明，水蒸气冷凝传热系数在实验范围内最大可比无磁场时增大10%，同时随着液膜雷诺数的升高，水蒸气冷凝传热系数受磁场的影响减弱。

A maximum increase of condensation heat transfer coefficient of steam of 10 % was observed , and the effect decreases with increasing Renault number of liquid membrane .