即使有工具的协助，向模型应用更改也是很耗时的，特别是在批次更改较大时。
Even with assistance from the tools, applying changes to the model can be very time-consuming, especially when the batch of changes is large.
该应用系统在提高复杂产品装配工艺设计质量，减少操作返工，缩短研制和批次制造周期等方面发挥了重要作用。
This application system plays an important part in improving the quality of technological process of complicated product assembly, reducing operation returns, shortening the period of devel.
本试验应用体外批次培养法，研究了不同精粗比（2：8与3：7）日粮甲烷产量的差异。
Based on in vitro batch incubation, different methane production of two diets with different forage:concentrte ratios(2:8 and 3:7) was compared.
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