packing ring的用法和樣例：
例句
- A special retainer ring holds the two sealing ring faces together.
一個特殊的固定環將密封環的表面靠在一起。 - These unions also have a resilent nitrile seal ring.
裝有彈性丁晴橡膠密封環。 - Make an inventory of all ring gaskets.
開一個所有墊圈的清單。 - Standard NIBCO iron valves are furnished with Synthetic Fibers and Graphite packing, along with Synthetic Fibre gaskets.
標準美國尼伯科鑄鐵閥門配置合成纖維和石墨填料，以及合成纖維墊圈。
