archimedes spiral disc 阿基米德螺线盘
The disc harbours the Sun and most of the galaxy's other stars, as well as the beautiful spiral arms.
主盘包含着太阳及星系里其他大部分的恒星，当然还有美丽的旋臂。
The discs emit energetic spirals. They are truly more spiral than disc, but they do appear disc- like when viewed.
这些圆碟会发射出能量的光旋，它们其实不是圆碟状而是螺旋形的，但看起来外像是圆碟一样。
The general situation, application features and technological and economic aspects of a new drying equipment composed of a double spiral dryer and a disc dryer are described.
介绍了新型干燥设备双螺旋干燥机和盘式干燥机结构及其应用情况。
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