弹簧管子吊架 spring-loaded tube suspension
子弹管
Bullet barrel
以上为机器翻译结果，长、整句建议使用 人工翻译 。
其主要影响因素有管的材料性质、径厚比、长径比以及子弹和管的弹径比。
The main influent factors include material properties, the proportion of diameter to thickness and diameter to length, and the proportion of diameter of missile to that of tube.
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模块上移
模块下移
不移动