.
分析了置换通风和混合通风的原理。
2. You can regulate the
ventilation">ventilation
of the insulators by calculating the circulation of manipulated chocolate.
你可以通过计算机受控巧克力的循环来调节绝缘体的通风。
3. Its reliability research is an important task that optimizing the mine
ventilation">ventilation
design, guarantee safe production and daily management.
其可靠性研究是优化矿井通风设计,保障安全生产和日常管理的一项重要任务。