The convector pits are covered with convrete grids that are prefabricated for building pigsties.
供并被通常用在猪
上的混凝土格栅
。
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Buildings can become greener. They can use more recycled steel and can be prefabricated in off-site factories, greatly reducing lorry journeys. But no other building material has environmental credentials as exciting and overlooked as wood.
建筑可以变得更绿色。它们可以增加再生钢材使用,还可以在工地外
工厂中 预
组件,大大减少对货运
需求。但各种建筑材料中,具有最让人兴奋
环保特性却也最受忽视
还是
材。