File:20mm munitions.jpg
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20mm_munitions.jpg （585 × 450像素，文件大小：88 KB，MIME类型：image/jpeg）
摘要
| 描述 | Twenty millimeter fuze functioning and penetration are affected by velocity and angle of impact at all ranges, particularly at ranges in the upper one third of the 2,000 meter value. However, this depends on the type of target that is engaged. |
| 来源 | FM-140: Field Manual: Helicopter Gunnery. United States Army |
| 作者 | US Army |
| 授权 (二次使用本文件) |
public domain |
许可协议
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| 日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
|---|---|---|---|---|---|
| 当前 | 2009年7月16日 (四) 03:48 | | 585 × 450（88 KB） | Phn229 | {{Information |Description=Twenty millimeter fuze functioning and penetration are affected by velocity and angle of impact at all ranges, particularly at ranges in the upper one third of the 2,000 meter value. However, this depends on the type of target t |
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