PICATINNY ARSENAL, N.J. -- During a firefight, the last thing a machine gunner wants to do is stop fighting to change barrels, but that's how it has always been done with standard, single steel-barrel ...
Chip morphology is one of the evaluation indexes of cutting performance of cutting tools, and chip forming process has a direct and important influence on chip morphology. High-strength steel 40CrMnMo ...
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