Deteriorating global economy has caused chemical industry to go into the down passageway of loop cycle since the end of 2007, and won't recover until 2011.
恶化的世界经济已使化学工业自2007年底起进入循环周期的下行通道,预计到2011年才能回复增长。
Then, it goes through a loop cycle until it satisfies a certain condition and ultimately goes to node 5 -- the final node in the flow.