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| 11. | The vacuum pumps begin sucking the air from the barrel of gun. |
| 真空泵开始抽取电子枪管里的空气。 |
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| 12. | cut spiral grooves in(a gun-barrel) |
| 在（枪管）内制出来复线. |
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| 13. | At one end of the barrel there was some radium. |
| 枪管的一端装有镭。 |
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| 14. | Even when a shooter holds a gun, he grips the barrel |
| 开枪者持枪时 他的手会抓住枪管... |
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| 15. | roughly sawn gun barrel blank for revolvers or pistosl |
| 左轮手枪或手枪的枪管毛坯 |
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| 16. | Which means it was probably fired from a polygonal barrel. |
| 很可能是从多边形的枪管里发射的 |
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| 17. | roughly sawn gun barrel blank for shotguns and rifles |
| 滑膛枪和来复枪枪管的毛坯 |
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| 18. | Having a smooth bore.Use of a gun barrel. |
| 用来指一支枪的枪管 |
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| 19. | A lightweight rifle with a short barrel. |
| 卡宾枪一种枪管短小的轻量型来福枪 |
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| 20. | order to reveal the relation between the fabrication process and erosion life of chromium plated gun barrel |
| 摘要为分析某型号机枪枪管的延寿机理，对4种不同工艺制备的镀铬枪管进行了寿命射击实验。 |
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