激光选区熔化(SLM)技术是目前最主要的激光粉末床熔融制造方式之一。SLM技术是基于逐层制造成型的过程,其工作时间成本一直是该技......

　　Two refugia of Ginkgo biloba in China were confirmed by our previous phylogeographic studies using AFLP,nuclear micr......