生齿密度年夜，根底设备单薄，街巷狭小拥堵，衡宇危旧成为这里地典型特征。
Population density is big, infrastructural facilities is weak, the street and lane is narrow be crowded, the dangerous old friend of building becomes representative here characteristic.
由于门窗设备的压料要确保足够的供气量，这么就能非常好的使用了，这是根底，来实现气缸压紧。
Due to the pressure of the door and window equipment to ensure adequate supply of gas, so it can be a very good use, which is the foundation to achieve the cylinder compression.
现场总线则是衔接智能现场设备和主动化系统地数字式、双向传输、多分支构造地通讯收集，其根底是智能仪表。
Fieldbus intelligent field devices are connected and digital automation system, two-way transmission, multi-branch structure of the communications network, based on smart meters.
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