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[2015年下半年VOA常速英语] VOA常速英语(翻译+字幕+讲解):学生构思3D打印新方法或能将废物再利用
现在3D打印的一种流行方法被称为SLS,即选择性激光烧结,它使用主要尼龙为材质的金属或塑料粉末,创建各式各样的物体,但会造成约44%的废物浪费。2015-08-20 编辑:mike
Severity: Notice
Message: Memcache::connect(): Server 127.0.0.1 (tcp 11211, udp 0) failed with: Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
Severity: Warning
Message: Memcache::connect(): Can't connect to 127.0.0.1:11211, Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
2015-08-20 编辑:mike