例句與造句

1. This normally excludes any net magnetic moment because magnetism requires partially filled " d " shells.
2. If they have the same magnitude, the crystal is antiferromagnetic and possesses no net magnetic moment.
3. A collection of such atoms however may not have any net magnetic moment as these dipoles are not aligned.
4. An external magnetic field may serve to align them to some extent and develop a net magnetic moment per volume.
5. Also, large parts of the magnetic material are essentially diamagnetic, and contribute nothing to the net magnetic moment.
6. It's difficult to find net magnetic moment in a sentence. 用net magnetic moment造句挺難的
7. Adding to the surprise was a transition with a decrease in temperature at around 260 K to a phase with no net magnetic moment.
8. In the paramagnetic state, the individual atomic magnetic moments are randomly oriented, and the substance has a zero net magnetic moment if there is no magnetic field.
9. Historically, the term " ferromagnetism " was used for any material that could exhibit spontaneous magnetization : a net magnetic moment in the absence of an external magnetic field.
10. Only atoms with partially filled shells ( i . e ., unpaired spins ) can have a net magnetic moment, so ferromagnetism only occurs in materials with partially filled shells.
11. The net magnetic moment points upwards, maximising ferromagnetic interactions in this direction, but left and right vectors cancel out ( i . e . are antiferromagnetically aligned ), as do forwards and backwards.
12. Generally, the nucleons ( protons and / or neutrons ) will " match " magnetic poles so as to cancel out, but in nuclei with odd numbers of them ( such as C-13 ) there is a net magnetic moment.