Using arrays is tricky when working with boundary conditions.
当工作于边界条件中时，运用数组是灵活的做法。
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According to the characteristics of HS-990 engine, a quasi-dimensional model for in-cylinder working process is developed and the computational boundary conditions are correctly determined.
According to the specialties of the area-covering mobile robots working in the outdoor environment, a new solution to the boundary set-up and identification of unmarked operational area is proposed.