For the particle-separation experiments, the researchers covered a large Lego board with cylindrical Lego pegs and placed the board vertically in a fish tank filled with glycerol, a viscous liquid.
Multi-level principal-agency systems among share holder meeting, board of directors and managers realize the separation between ownership and actual control power.
股东会、董事会、经理层等之间的多重委托—代理制度，实现了所有权和实际控制权的分离。
3
The combined highway guard rail board can be used in a narrow central separation belt.