After careful reading of this introduction the student should： 1. Understand that various measurement systems can be used， but all lead to the same answer. 2. Understand that dimensions in different systems of measurement are the same， and how to apply them to equations.3. Understand that the dimensions in all terms of an equation must be the same， and know how to check this by decomposing terms into dimensional groups.4. Understand the various properties of a fluid， their symbols and dimensions.
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