A toroid generated by a circle; a surface having the shape of a doughnut.

环面，环形圆纹曲面圆圈形成的超环面；具有炸面。

Such plasmas can be confined as a high aspect ratio toroid having compact dimensions.

能够将这种等离子体约束为一个具有紧凑尺寸的高比率圆环。

The magnitude of the current depends on the resistivity near the bit, and is measured by another toroid.

电流大小与钻头附近电阻率有关，由另一个螺旋线圈测量。

The experiment research on stability of ring-stiffened concave cone-toroid-cylinder combined shell is presented.

本文对凹型加肋锥-环-柱结合壳稳定性进行了模型试验研究，观察到凹环壳段失稳的一个特殊现象。

It is necessary for both straight profile toroid worm and double enveloping toroid worm to be pruned on the faces of teeth.

直齿廓环面蜗杆或者二次包络环面杆蜗，均需进行修形加工。