利用净贸易条件指数和收入贸易条件指数从整体和分类2个层面对中国主要林化产品1992～2005年贸易条件进行分析，对2002～2005年世界主要林化产品地区结构进行分析。
This study deals with China's terms of trade in 1992-2005 through NBTT and ITT and world's region structure in 2002-2005 of major forest chemical products in a comparatively systematic way.
收入贸易条件：即以出口额加权的净易货贸易条件，以此表明出口带来的购买力。
Income terms of trade: the net barter terms of trade weighted by the volume of exports. It gives an indication of the purchasing power of exports.
收入贸易条件：即以出口额加权的净易货贸易条件，以此表明出口带来的购买力。
Income terms of trade: the net barter terms of trade weighted by the volume of exports. It gives an indication of the purchasing power of exports.
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