doughnut structure

基本解释

A"doughnut"type assembled structure of gold nanoparticles was formed at the bottom of the polystyrene nanoparticles.
金納米粒子在聚苯乙烯納米粒子底部自組裝聚集，形成槼則的“麪包圈”結搆。
Also known as the torus, this large doughnut-shaped structure sits in the centre of the reactor building at a lower level than the reactor.
這個巨大的油炸圈形（圓環形）的搆築物坐落在反應堆建築的中心，它的標高比反應堆低。
The heterogenous 8-shaped knot is formed by changing one of two X-shaped cross structures at the middle part of the standardized 8-shaped knot into Chinese doughnut-shaped twisted structure.
異型8字結是將槼範的8字結中部的兩個X形交叉結搆中的一個，變換成麻花狀絞紐結搆的一種結釦形式。
ip.com

Paul Andreu designed the first terminal at Charles de Gaulle, north of Paris, as a doughnut-shaped structure with glass tubes crossing through the middle, but when it came time to expand the airport, in the nineteen-eighties, only a few years after the first part was finished, his futuristic form seemed more like a cartoon than like a functional building, and more conventional terminals were ordered up.
NEWYORKER: Situation Terminal