Based on the preceding study, the FDM machine is designed.The key problem is focused on the feeding section and the extrusion of the melted polymer wire.是什么意思_Based on the preceding study, the FDM machine is designed.The key problem is focused on the feeding section and the extrusion of the melted polymer wire.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句