Plastic rod spool 塑杆阀芯
plastic spool
塑料线轴
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The Shells are constructed out of ABS -- the same plastic used to create Lego -- which is fed into the printer from a spool.
ENGADGET: MakerBot's Turtle Shell Racers cruise around our offices (video)
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模块上移
模块下移
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