Postcard display rack, magnet display rack and key chains display rack are all OK. We will send you some pictures and size for your reference.
明信片展架、磁力展架和钥匙扣展架都没有问题，我会发一些图片和尺寸给你参考。
2
The structures and the design of ITER superconducting feeder system, which is an important reference to the feeder design for other superconducting magnet system, are described.
介绍了国际热核试验堆超导馈线系统的结构及设计情况，为同类型超导磁体的馈线设计提供了有益的参考。
3
A nonlinear speed controller for permanent magnet synchronous motor based on adaptive backstepping control was designed, which USES second-order filter to smooth the speed reference.