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 secured to the tapered end of the cylinder to allow a protective cylinder cap to be installed.
确保车床轧头牢牢地固定在心轴端的机械平面上，而不是锚定在锥形心轴的平滑面上(图7 - 44)。
Ensure that the lathe dog is secured to the machined flat on the end of the mandrel and not on the smooth surface of the mandrel taper (Figure 7-44).
上述金属嵌件一端部的内表面为锥形的密封面。
The inner surface at one end of metal insert is cone-shaped sealing surface.
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