This cylinder ejects a stand to the operatorside, so that it will be put on a common switching car.
这一个圆筒逐放到操作员边的一个台子，所以它将会被穿上通常的转变汽车。
2
Apply the operator, from one side of the list to the other, beginning with the left for foldl or right for foldr.
从列表的一侧到另一侧应用操作符，对于foldl是从左侧开始，对于foldr是从右侧开始。
3
8 min An operator notices that the valves for the backup pumps in the secondary loop are off. He opens the valves. The secondary side now operating normally.