abaci

基本解释

Disposing welding section steel cross bridging in the slab-column system is a good means to avoid disposing abaci and elevating shear resistance.
合理设置型钢剪力架是避免设置柱帽和板托，同时有效提高板柱节点抗冲切承载力的最受欢迎的有效手段。
Nowadays, abaci are often constructed as a wooden frame with beads sliding on wires, but originally they were beads or stones moved in grooves in sand or on tablets of wood, stone, or metal.
如今，算盘往往建造在电线与滑动珠子木框架，但是最初他们是珠子或石头，在沙槽移动或木材，石头或金属片。

Toy companies like Anatex and Imaginarium --a division of Toys R Us Holdings--still sell abaci too, since they're often used to teach mathematics to kids.
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Corporate Connections: Abaci aren't as popular as they once were, but you can still buy one from companies like American Science and Surplus or Advance Engineering.
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Abaci are still widely used in the East, with slight variations in design--such as the number of beads and wires, and the presence of dividing beams--occurring between countries.
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