英語翻譯
hole-based systen and shaft-based system.in order to obtain a range of degrees of clearance,and degrees of interference,it is necessary to use a wide variation of hole sizes and shaft sizes.for example,a manufacturing company could be making a number of parts,all of a nominal 25-mm diameter,but which are all slightly different in actual limits of size,to suit the actual fit required of each pair of parts.this situation could mean that a large number of drills,reamers,gauges,ect.were required.
翻譯的要順暢一點,百度翻譯貌似不對~