Abstract: The present application relates to a roof-greening grass carpet, a cultivation method thereof, and a method for one-step establishment of a turf using the same. Wherein the roof-greening grass carpet comprises a first filtering cotton layer, a moisturizing cotton layer, a second filtering cotton layer and a planting layer; the first filtering cotton layer, the moisturizing cotton layer, the second filtering cotton layer and the planting layer are arranged one after the other from the bottom up; a thickness of the first filtering cotton layer ranges from 0.8 mm to 5 mm; a thickness of the moisturizing cotton layer ranges from 3 mm to 10 mm; and a thickness of the second filtering cotton layer ranges from 0.8 mm to 5 mm; roots in the planting layer run through the second filtering cotton layer, and further root into the moisturizing cotton layer.

Abstract: A heavy-current system, and a heavy-current distributor used in a building are provided; the heavy-current system comprises a plurality of first distributors respectively installed in different positions, and a plurality of electric equipments; each of the first distributors includes a PCB board, a power transmission copper bar, an inlet port, and a plurality of groups of connection ports; wherein the power transmission copper bar, the inlet port and the connection ports are arranged on the PCB board; the inlet port and the connection ports are further electrically connected to each other via the power transmission copper bar; the inlet port of the first distributor is connected to the distribution box via power transmission line, and the electric equipments are respectively connected to the inlet port of one of the first distributors via the power transmission lines.