The second part includes chapters II and III. It depicts our country's live pig industry's supply, demand and the cost and cost's change of production.
第二部分包括第二章和第三章，即对我国生猪养殖业的供给与需求及生猪生产的成本水平、构成及其变化进行了概述。
The second part includes chapters II and III. It depicts our country's live pig industry's supply, demand and the cost and cost's change of production.
第二部分包括第二章和第三章，即对我国生猪养殖业的供给与需求及生猪生产的成本水平、构成及其变化进行了概述。
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