http://i.imgur.com/HsuDUPC.jpg
http://i.imgur.com/HF9kirI.jpg
http://i.imgur.com/J64ElTT.jpg
http://i.imgur.com/kXEm2QI.jpg
http://i.imgur.com/aidXQhE.jpg
http://i.imgur.com/zRu9sCv.jpg
http://i.imgur.com/PwRCh35.jpg
http://i.imgur.com/jqX5D7f.jpg
http://i.imgur.com/5ELXjz1.jpg
http://i.imgur.com/Q7ya6QG.jpg
http://i.imgur.com/uz4qDAK.jpg
http://i.imgur.com/PPOTC3z.jpg
http://i.imgur.com/Mh8Hv1J.jpg
http://i.imgur.com/roIetVR.jpg
http://i.imgur.com/HZPfdgE.jpg
http://i.imgur.com/o23kfzP.jpg
http://i.imgur.com/iXiZSvV.jpg
http://i.imgur.com/8YrAU4Q.jpg
http://i.imgur.com/aTvG1lf.jpg
http://i.imgur.com/YzVEVrp.jpg
這是模態分析的圖 前十張為空心軸 後十張為實心軸 外徑為5 內徑2，5
想請問從這些圖可以觀察出有何趨勢
新手發問 請見諒