BAK - Disamat 801 Hot Air Welding Machine. BAK - Disamat 801 The welding machine for â¦more
The different grades of the Risser sign give a measure of bone maturity and thus of the skeletal growth to be expected. In Europe, a scale ranging from Risser 0 to Risser 5 defines the grades from beginning ossification to complete fusion of the apophysis to the iliac bone. In the USA, 4 grades are defined.
The efficiency of air conditioners is expressed using a measure referred to as the SEER rating. SEER is an acronym that stands for Seasonal Energy Efficiency Ratio. The SEER rating of any air conditioning unit basically means how much cooling output the unit produces divided by the amount of electrical energy it uses.SEER rating allows anyone who is so inclined to calculate the kilowatts per hour that it would cost to operate an air conditioning unit.or example, if you were trying to decide between a 13 SEER air conditioner and a 16 SEER model, you would probably just want to know that the 16 SEER unit is approximately 20% more energy efficient than the 13 SEER unit. (about 23% more efficient to be more precise).