Place another hollow ring for the roof layer above that.
在其上放置另一个空心圆环作为屋顶的一层。
The roof abscission layer is the biggest security hidden danger in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
There is also full view canteen and top layer sightseeing in glass tower at roof.
屋顶的玻璃塔则设有空中全景餐厅以及顶层观光层，将整个景区的美景尽收眼底。
Green roof have different layers and each layer have their own special function.
绿色种植屋面有一定的构造和层次，各个层次具有不同的功能和作用。
In the old roof can be directly on the construction of the waterproofing layer.
屋面可在旧的防水层上直接施工。
The roof separation layer is the biggest security hidden danger in bolt support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
The solution is to build a sliding layer in the roof covering and wall space.
为解决这一问题，可在其屋面与墙面设置一个滑动层解决之。
The roof abscission layer is the biggest security risk in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
The roof abscission layer is the biggest security risk in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
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