jìshī / yòng / jiǎodāo / kuòdà / kǒngjìng / shǐ / língjiàn / nénggòu / zhǔnquè / zhuāngpèi

技师用绞刀扩大孔径，使零件能够准确装配。

The technician used a reamer to enlarge the hole so that the parts could be assembled accurately.