A threaded neck ring is secured to the tapered end of the cylinder to allow a protective cylinder cap to be installed.
车有螺纹的颈环固定在钢瓶的锥形端，可以安装保护性瓶帽。
A threaded neck ring is attached to the tapered end so that a protective cylinder cap can be installed.
锥状顶端装有带螺纹的颈环，可以安装保护性的钢瓶帽。
The end of the cylinder is closed by an end cap which is secured to the cylinder.
圆筒体的一端用一个固定在筒体上的端盖封闭。
The end of the cylinder is closed by an end cap which is secured to the cylinder.
圆筒体的一端用一个固定在筒体上的端盖封闭。
应用推荐