贸易壁垒调查制度，在国际上的应用是相对久远的，而且在维护国家自身经济利益上有着重要作用。
The system of trade barrier investigations has existed for a long time in the world, and plays a key role in the field of protecting the economy interest of a state.
贸易壁垒调查制度，在国际上的应用是相对久远的，而且在维护国家自身经济利益上有着重要作用。
The system of trade barrier investigations has existed for a long time in the world, and plays a key role in the field of protecting the economy interest of a state.
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