We also analyse the critical velocity, at which elastic deformation translate to plastic deformation when the bullet impact the tube.
同时也分析了冲头对圆管碰撞时，导致圆管由弹性变形向塑性变形转化学的临界速度值。
Three additional warheads were expended in insensitive munition (IM) screening also at Socorro, meeting cook-off and bullet impact expectations.
三个附加在弹头上的特殊涂层，也对军需品（IM）降低敏感程度起到至关重要的作用。
Existing armour stops bullets, says Mr DeGay, but it is heavy, and its snug fit means that the impact of a bullet can still cause broken bones or internal injuries.
DeGay先生说，现有的装甲能够抵挡子弹，但它太过于沉重，而它的贴身性则意味着子弹的冲击仍然可能造成骨折或内伤。
Although mobile phones have had a "transformational impact" on Sub-Saharan, South Asian and other low-income regions, new technologies are not a "silver bullet" to eliminate hunger, Burns stresses.
尽管手机对撒哈拉以南、南亚及其他低收入地区产生了“改头换面的影响”，但新技术并不是消除饥饿的“万灵药”，伯恩斯强调说。
One mission, called Deep Impact, will probe the interior of a comet by shooting a 770-pound (350-kilogram) copper bullet through its heart.
一项称之为“深度影响”的任务是通过将一个770磅(350公斤)的铜弹射人慧星的心脏来探测慧星内部的结构。
One mission, called Deep Impact, will probe the interior of a comet by shooting a 770-pound (350-kilogram) copper bullet through its heart.
一项称之为“深度影响”的任务是通过将一个770磅(350公斤)的铜弹射人慧星的心脏来探测慧星内部的结构。
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