barrel and barrel extension group 枪管和枪管节套组
barrel extension shank 枪管节套钩
extension warping barrel 伸缩式带缆卷筒
Barrel l extension 枪管延伸部
extension-warping barrel 延伸式带缆卷筒
extension core barrel 伸缩岩芯管
The BRG-15 had conventional, gas operated action with rotating bolt, locking into the barrel extension.
该担心现有- 15接受传统，燃气经营与旋转螺栓行动，延长锁入桶。
In this action bolt has two frontal lugs that engage the barrel extension, which is screwed onto the barrel.
螺栓在这次行动中有两个是从事前沿耳桶扩展，这是到每桶拧。
By using the finite element method, the dynamic stress caused by vertical contact impact between bolt locking surface and barrel extension locking surface of a new rifle was studied.
采用有限元方法研究了某新型自动步枪枪机闭锁面与节套闭锁面间垂直接触碰撞的动应力。
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