doughnut-shaped meaning in English

环形的

The mountain is encircled by the doughnut-shaped depression of the caldera .
山为环形的破火山口洼地环抱着。
As the cloud collapsed under its own weight and rotated faster , some material was spun into a doughnut - shaped disk
当云彩崩溃了在它自己的重量之下和快速地转动了,一些材料转动了入一张油炸圈饼形盘。
To keep astronauts in the equivalent of an equatorial region , the living quarters of the spacecraft would have to be doughnut - shaped
为了让太空人保持相当于赤道区的状况，太空船的活动区必须做成甜甜圈状。
That technique uses a magnetic field to hold large volumes of the same isotopes of hydrogen inside a doughnut - shaped vessel , called a tokamak
磁约束聚变的方法就是利用磁场，将大量氢的同位素维持在环形容器（称为托卡马克）中。
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
许多高功率微波源产生的微波模式都是圆波导轴对称模式,由于其输出端口的口径场分布具有圆对称性,将导致轴向为零的环状远场方向图。