A barrel body is provided with a fitting opening.

桶体上开有装修口。

youdao

The arrangement of the safety valve makes the barrel body form zero load when the tyre pressure reaches the set value.

设置安全阀可使得在轮胎压力达到设定值时，筒体形成空载。

youdao

The upper side of the barrel body is provided with an observation cleaning hole; therefore, the cleaning is convenient and quick.

在筒体的上边设有观察清理孔，因而清理方便快速。

youdao

Despite the explosion that just occurred inside of it, both the barrel and the body of the gun seem entirely unscathed.

FORBES: Meet The 'Liberator': Test-Firing The World's First Fully 3D-Printed Gun

So far those pieces have included high capacity ammunition magazines for AR-15s and AK-47s, as well as an AR lower receiver, the body of that semi-automatic rifle to which off-the-shelf components like a stock and barrel can be attached.

FORBES: This Is The World's First Entirely 3D-Printed Gun (Photos)