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SHIELDING GASES
Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.
Argon and helium or mixtures of the two are the most common types of inert gas used for the shielding. Argon hydrogen mixtures are used for special applications.
Comparison between work and heat - thermodynamics: There are a number of similarities between heat and work. 1. Both heat and work are transient phenomena. The systems do n
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Give justification toward the development of rapid prototyping?
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in fontan circulation that is represented as a circuit
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