Go to the beach to play what needs to be prepared
Play a protective role, and will not hold back the sound
5 meters, above a few stainless steel tube wrapped around the rod, they are safe insurance, especially the visual sense of security only, mainly from a psychological role, in fact All gravity loads are supported by cantilever beams (or cantilevered steel frames) If you insist on not a few rods, we all dare not pick out too long, at most, more than 2 meters Indeed, the public's sense of visual security is very important, the structure you do more firmly, and then reliable, but the public daunting, you this design is not enough success ah
Household air conditioning evaporator and condenser can be converted, in the cooling state, the external machine is the condenser, the machine is the evaporator. In the heating state, the external machine is the evaporator, the machine is a condenser. Use the four-way valve to change the state. Throttling the use of capillaries.
