With certain shapes of or canula, elongated caps are made to cover both canula and threaded portion, and seal the canula at its top.
根据管
管的不同形状，可以制造细长的管盖以覆盖管螺纹
，并
顶封住管。
With certain shapes of or canula, elongated caps are made to cover both canula and threaded portion, and seal the canula at its top.
根据管管的不同形状，可以制造细长的管盖以覆盖管螺纹，并顶封住管。
声明：以上例句、词性
类均由互联网资源自动生
，
未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
