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畜牧人

標(biāo)題: 研究啊！ [打印本頁]
作者: 阿彬    時間: 2007-4-17 09:28
標(biāo)題: 研究啊！
該研究研究啊！

有誰研究過養(yǎng)豬的保本價格m，能創(chuàng)造利潤時的價格t，飼料（全價飼料）分小中大豬階段的飼料價格（a，b，C），和三階段用料量（h，k，j），豬苗總價，肥豬單價的關(guān)系式？
作者: 阿彬    時間: 2007-4-17 19:49
http://www.13857.com/musiclist/14094.html



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