求翻译：其次是确定本次设计是以热水为热媒的建筑集中供热系统，计算热负荷；再次根据热负荷及建筑物的形式等条件，提出了供暖方案，选择并布置了供暖管网系统，绘制平面图和系统图，并进行了水力计算，选择管径和流速，使管网系统较好地符合了水力平衡要求。最后确定锅炉的选型及型号以及设计说明书的编写和各种图纸的绘制是什么意思？

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Next is determined this design is take the hot water as the heat carrier construction centralism heating system, calculates the heat load; Once more acts according to heat load and building conditions and so on form, proposed the heating plan, chose and has arranged the heating pipe network system,

Second is determines this times design is to hot for hot media of building concentrated heating system, calculation hot load; again according to hot load and the buildings of form, conditions, proposed has heating programme, select and layout has heating tube network system, draws plane figure and s

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