Infra - red absorption takes place only when there is a change of dipole moment.

红外吸收峰仅在有偶极矩变化时才能实现。

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With geomagnetic field model records, several kinds of secular variation of geomagnetic dipole moment and the position of the geomagnetic North Pole during the year 0 ~ 2000 a.

利用地磁场模型资料，计算和分析了公元0 ~ 2000年的地磁场偶极子磁矩和地磁北极位置的长期变化。

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The dipole moment of a permanent magnet for Alpha Magnetic Spectrometer (AMS) is discussed in the paper.

本文主要研究阿尔法磁谱仪(简称ams)永磁磁体的磁矩问题。

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The dipole moment of a hexamer of water molecules turns out to be almost identical to the dipole moment of bulk quantities of water indicating that liquid water is made up of cage-shaped hexamers.

ECONOMIST: Molecular bonding

The dipole moment of an object is a measure of how electrical charge is distributed within it.

ECONOMIST: Molecular bonding