...网络拓扑和介质:令牌环网络使用所谓的环型拓扑然而, 它能够通过看上去象是物理星型拓扑的、最好称为折叠环(Collapsed Ring)的结构来实现。如图3.3 所示。
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因此设计是折叠式纸盒质量保证的至关重要的一环。
Because of this design is a folding carton is critical to quality assurance.
可折叠，绕在大滚珠轴承上？电力驱动或手动？重型大脚轮？地面锁制动器？导向环？工具和配件存储盘。
Collapsible Coiler - Rotates on Large Ball Bearings? Power Drive Assembly or Hand Operated? Large Heavy Duty Casters? Floor Lock Brakes? Guide ring? Tool and Tag Tray.
一个孔板(支撑骨架)被置于上下密封环的中间来加固折叠材料以防变形(密封力)。
A perforated plate (supporting shell) is placed between upper and lower sealing rim to reinforce the pleated material against deformations (sealing force).
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