这座百年前修建的小石桥正在维修。
The little stone bridge built a hundred years ago is under repair.
体积小，重量轻、噪声低，结构简单，维修方便。
Small size, light weight, low noise, simple structure, easy maintenance.
特点：动力小，操作方便，容易维修。
Features: Low power consumption, convenient operation, and friendly maintenance.
结构紧凑，启闭性好、高度小、维修方便。
Compact structure, well to be opened and closed, lower in height, easy maintenance.
动力消耗小、无噪音、维修方便。
组合结构简单，强度高，自重小，维修方便；
Simple composite structure, high strength, light weight and being easy for maintenance;
体积小、重量轻、基本不需要维修等优点。
Small volume, light weight, basic don't need maintenance, etc.
具有使用方便、易于维修、体积小、重量轻等优点。
With easy to use, easy maintenance, small size, light weight and so on.
分离能力强，结构简单，操作维修方便，占地面积小。
It is a better in separation, simple in structure, easy in operation and maintenance and small in the floor space.
分离能力强，结构简单，操作维修方便，占地面积小。
It is a better in separation, simple in structure, easy in operation and maintenance and small in the floor space.
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