Minor-caliber guns equipped in our army are the main middle and low air aerialdefending and anti-missile weapon and the primary arms of the infantry armor. The qualityof the bore is the key factor that can affect the main tactical techno-guideline, such as theprecision of the gun、preliminary speed、firing rate、life. And at the same time it relatesto the safety and dependability of the whole weapon system in using. It is the importantartifice to guarantee the producing quality of the minor-caliber ...
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