doughnut-shaped การใช้

The mountain is encircled by the doughnut-shaped depression of the caldera .
As the cloud collapsed under its own weight and rotated faster , some material was spun into a doughnut - shaped disk
To keep astronauts in the equivalent of an equatorial region , the living quarters of the spacecraft would have to be doughnut - shaped
That technique uses a magnetic field to hold large volumes of the same isotopes of hydrogen inside a doughnut - shaped vessel , called a tokamak
Many high - power microwave ( hpm ) sources utilize an azimuthally symmetric output mode such as the tm 01 circular waveguide or the coaxial tem mode as output mode . if radiated directly these azimuthally symmetric modes will generate a doughnut - shaped pattern , with a null on boresight