| http://www.w3.org/ns/prov#value | - The ratios which are given, then, after each of these elements, indicate the wide range of judgment which practically every machinist has been called upon to exercise in the past in determining the best speed at which to run the machine and the best feed to use. (A) The quality of the metal which is to be cut; i.e., its hardness or other qualities which affect the cutting speed.
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