In the event of an IPO , all preferred stock becomes common stock , and the preference stack goes away .
在进行首次公开募股后,所有的优先股都会变成普通股,清算优先权也就消失了。
When it reached the required quantity , the whole stack will move away by conveyor control .
当达到所需的数量,输送机会将整堆搬移。