中国农产品贸易结构演化及对粮食安全的影响 |
王念, 程昌秀, 林耿 |
Evolving agricultural trade structure and its impact on food security in China |
WANG Nian, CHENG Changxiu, LIN Geng |
图4 农产品净出口程度与波动水平分级结果 |
Fig. 4 Net export degree and volatility level of agricultural products |
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