n.开槽；打孔
动词slot的现在分词.
Product slotting often presents the biggest opportunity for enhancing labor productivity. 产品介绍开槽往往最大的机会，提高劳动生产率。
There are two causes or cogging force in linear permanent magnet motors, resulting from the slotting and the finite length of the iron-cored. 永磁直线电机的定位力是由铁心开槽及铁心的有限长产生的。
