The Mixed Cocoon Reeling Model and the Distribution of the Cocoon Number of Different Cocoon Layers in the Raw Silk Reeling with Fixed Number of Cocoons是什么意思_The Mixed Cocoon Reeling Model and the Distribution of the Cocoon Number of Different Cocoon Layers in the Raw Silk Reeling with Fixed Number of Cocoons在线翻译_英语_读音_用法_例句