配合种类，配合等级 classes of fits 种类 kind; class; description; type; variety 不同种类的刀具 cutters of different kinds; 种类繁多 a great variety ..
双语例句
1
There are three classesoffits: 1) clearance fits, 2) transition fits (the assembly may have either clearance or interference), and 3) interference fits.
存在三种配合：1）间隙配合，2）过渡配合（装配后可以有 间隙或过盈），和3）过盈配合。
2
Germany’s talent for bespoke engineering and sleek cars fits well with the needs of fast-industrialising countries and their new middle classes.