英语语法分析

The photosynthesis biomass production submodel was used from reference of rice.

光合物质生产子模型中借鉴了水稻的研究成果；

Then I research the three submodel of digital model of voice signal: inspired model, sound gate model, and radiant model.

并且研究了语音信号的数字模型，包括激励模型、声管模型和辐射模型三个子模型。

The model consists of two parts, the general model of ironmaking system and submodel of sintering process, both are nonlinear program model.

模型由炼铁系统总体模型和烧结过程子模型组成，二者均为非线性规划模型。