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toroidal
This term is primarily used in technical, scientific, and mathematical contexts. While it describes a shape similar to a doughnut or a ring, it is far more formal and precise than those common descriptors. In a casual setting, a native speaker would almost always say "doughnut-shaped" or "ring-shaped" rather than "toroidal."
In physics and engineering, it specifically refers to the geometry of magnetic fields or coils where the field is contained within a closed loop, preventing leakage. This makes it a critical term in discussions about transformers, tokamaks, and plasma confinement.
In mathematics, specifically topology, it describes a surface with one hole (a genus-1 surface). It is used to distinguish the properties of a torus from those of a sphere or other topological manifolds.
意味
例文
The fusion reactor uses a toroidal magnetic field to confine the plasma.
Look at this toroidal coil for the transformer.
Look at this toroidal coil for the transformer.
The artist sculpted a series of toroidal forms from polished steel.
Is the current flowing in a toroidal path around the core?
The topology of the surface is toroidal rather than spherical.
I wonder if a toroidal antenna would improve the signal reception.
The device features a toroidal winding to reduce electromagnetic interference.
The device features a toroidal winding to reduce electromagnetic interference.