the ratio of pressure of co2 : n2 : he used in co2 laser is mcq
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the mixture of laser gas is depended on the design of each machine because there are certain co2 laser cutting machine that used 3C (combination of 3 gases) and 4C (combination of 4 gases). I'm using a CO2 laser machine with 4 combination of mixture gases (CO, He, N and CO2).
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