第一感觉是弹簧！
不知道
这是米国人搞出来的东东
有压簧和拉簧， 1#的是拉压两用弹簧。
A. Machined Springs for the isolation of optical benches on the Airborne Laser.B. Machined Springs for the load isolation system on a cargo transportation container used on Space Shuttle/Space Station.C. Conventional Helical Style Springs are also available. AdvantagesLinearity
Machined springs are inherently linear because residual stresses are eliminated and the coils never rest against each other as the spring deflects. Spring rate is the same in both tension and compression.Spring Rate Accuracy We can predict spring rate within +/- 1% before any parts are made using finite element analysis. After making your first part we can then measure its spring rate and remove a calibrated amount of material to achieve the specified rate within measurement error.One Piece Construction Mounting flanges, attachment threads and other fittings can be part of the machined spring. The spring can be an integral part of the machine instead of an add-on.Extremely Long Life Finite element analysis accurately predicts stresses at all points in the spring to provide a design that stays well within fatigue limits. Machined springs can achieve essentially infinite cycle life.Wide Variety of Materials Machined springs can be made from a variety of materials such as high strength steel, stainless steel, aluminum, titanium, and high strength plastics.No Cocking or Twisting The ends of a machined spring are inherently square and the design of the spring automatically eliminates both twisting and cocking.Tension/Compression Operation Unlike coil springs which require a special attachment to operate in tension, machined springs inherently permit both tension and compression operation because their attachments are built in.Freedom from Resonant Vibrations Unlike coil springs which have unavoidable low frequency resonances (surge), machined springs have much higher resonances which are less troublesome. We also have a proprietary treatment that effectively damps out all resonances.Light Weight As spring weight is inversely proportional to the square of the allowable material stress, the ultra-high strength steels available for machined springs can cut 50% or even more from their weight.
The Only Disadvantage
The only disadvantage to a machined spring is cost. You can expect to pay 10 to 100 times as much as you would for a conventional coil spring. So don't expect to use machined springs in most applications. But if you need extraordinarily light weight, or precise alignment, or exact and consistent spring rate, then please consider using a machined spring.
感谢前辈指点！
杯子罩，防烫用的。
套杯子外边的 要么是装饰 要么是散热要么是保温
我来个大胆点的。。。。。。是杯子！
的确有一种联轴器是这个形式的，开始我以为是刚性联轴器，试了才知道是个比较好玩的弹簧。
可以暖手 手不会直接和杯子接触 不会烫手
弹簧缓冲用的几率较大，多组使用更佳。
先猜再看答案。