The National Electric Code, in Article 690.5, requires that any PV array installed on the roof of a dwelling must incorporate a ground-fault protection device to reduce fire hazards.
《美国国家电气法规》第690.5条规定，安装于住宅楼顶的任何光伏阵列都必须配备接地故障保护器件，以减少火灾隐患。
This reservoir can be installed both boxes on the ground can also be installed under the ground, and do not set up over the entrance.
这样储液箱就既可以安装在地面上也可以安装在地面下，而且不用设置溢入口。
Two imitating boards which installed on the bottom of two side of header can adjust to stubble height according to different ground condition.
割台两侧底部设置仿形板，可根据不同地面状况调整割茬。
The machine need to be installed on the concrete ground reposefully, the basic shall as the actual location.
本机必须平稳放在混凝土上，基础视当地情况决定。
The underground pipeline is usually installed by top pipe method for the constructions on ground with concentrated railway and highway.
地面建构筑物．在铁路、公路密集条件下．顶管法铺设地下管道为最常见的施工方法。
The work roll surface can be ground on-line by a non-driven cup type of on-line Roll Grinder(ORG) installed in a strip mill to maintain the appropriate roll shape.
它通过设置在带材轧机上的无驱动式杯形磨辊装置，对轧制中工作辊表面进行在线磨别，以保证轧辊保持良好的轨型。
Therefore they could be installed in a secure location on the ground, so that a pump or pipe to avoid being tripped or the possibility of damage from vehicles.
因此可以把它们安装在地面之上的安全位置，这样就避免了泵或管道被绊倒或被来往车辆损害的可能性。
After leveling the ground, the ground beam is paved, and then the ground board is installed on the ground beam according to the sequence of driver and slaver.
地面清理平整后，铺设地梁，然后按照公母次序在地梁上安装好地面板。
No need to avoid parking equipment installed in the square, the original building and residential parking Spaces on the ground and underground parking garage can be.
无避让停车设备在广场、大厦和小区原有地面停车位和地下停车库均可安装。
No need to avoid parking equipment installed in the square, the original building and residential parking Spaces on the ground and underground parking garage can be.
无避让停车设备在广场、大厦和小区原有地面停车位和地下停车库均可安装。
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