lubricator groove的用法和样例：
例句
- Usually, the outer ring of the TL bearings has grease groove, bearings having no grease groove are to be provided, too.
外球面球轴承外圈一般带油槽，也生产外圈无油槽的产品。 - There is one oil groove in the bronze bushing, where lubricant can flow into the axis from the oil hole on the cap of housings.
轴瓦内表面的不承担载荷部分开有油槽，润滑油通过进油孔和邮沟流进间隙。
