Chan realized he could solve the problem by imagining his cylinder full of ball bearings as a stack of disks, with a single layer of ball bearings on each disk.
陈和奎认为他能够解决这个问题，他设想将一层球形物摆到一个碟子上，然后将碟子堆积起来，圆柱体就装满了球形物。
The Company closed the main supply monitoring, surveillance cameras, monitoring equipment, hard disk recorders, network cameras, smart ball, ball speed, infrared cameras, micro-cameras and so on.
本公司主要供应闭路监控，监控摄像机，监控器材，硬盘录像机，网络摄像机，智能球，高速球，红外摄像机，微型摄像机等。
The wear resistance and electrochemical corrosion properties of IBED coatings were investigated with ball-on-disk wear tester and electrochemical equipment, respectively.
利用球盘磨损试验机和电化学综合测试仪研究了IBED膜层的摩擦学性能和电化学腐蚀特性。
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