三葉蟲(chóng)砂型

Explanation : By using fossil trilobite fossils of the Paleozoic era, we produced a mold that can shape the sand or snow. If you hold the handle and combine the two molds and pull them out again, the trilobites appear. It can be used as a children's toy and used as a learning playground equipment. You can also download this file from the link : Many other 3Dprinting files are in the "3DSangSangPortal". （3D想象門戶網(wǎng)站） Everyone please come and download. :) All files are : 描述： 利用古生代的三葉蟲(chóng)化石，制作出可將沙子或雪凝聚成形的模具。抓住手柄，將兩個(gè)模具合在一起，再去掉的話就會(huì)出現(xiàn)三葉蟲(chóng)?？梢杂米骱⒆拥耐婢?，同時(shí)作為學(xué)習(xí)用的游戲工具。 此資料可在下面的鏈接中下載。 除此之外還有很多3D打印資料在“3D想象門戶網(wǎng)站”中。 誰(shuí)來(lái)下載吧：都是安全的文件。