Inside the box, the scientists created a trail with their artificial fish, which was essentially a rubber fin on a stick that created a trail similar to the swimming motion of a real fish.
在那个盒子里，科学家用假鱼设计了游动轨迹，基本上，那是由橡胶鱼鳍形成的，和真正的鱼游轨迹十分相似。
2
They operated the fin from outside the box, moving it from left to right or from right to left.
他们把橡胶鱼鳍放在盒子外面，左右摇动。
3
The system implements the parametric design and drawings of many typical kinds of refrigerating parts, e. x. the plate-tube evaporator, the single back-fin evaporator and the box condenser.