US adopted mixed operation system before 1933 and turned to separated operation system with the implementation of GS Act. While in 1999, it returned to mixed operation system.
美国1933年以前采取混业制度，1933年随着《格拉斯-斯蒂格尔法》的实施转向分业制度，而1999年又重新回到混业制度。
Modern enterprise system has made the ownership and operation-right separated from each other.
在现代企业制度下，企业的所有权与经营权相分离。
US adopted mixed operating system before 1933, and turned to separated operation with the implementation of GS Act. While in 1999 it returned to mixed operation.
美国1933年以前采取混业制度，1933年随着GS法案的实施转向分业制度，而1999年又重新回到混业制度。
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