non-contact seal

• 非接触型密封,非接触式密封

non-contact seal的用法和样例：

例句

1. Hubs also feature precision cartridge bearings with low drag supplementary contact seals and bearing preload adjustment on both front and rear hub shells.
   中心还具有墨盒轴承精度低阻力补充接触式密封和轴承预压调整的正面和背面中心炮弹。