间隙

安装高精度机械设备时，工程师必须用塞尺仔细检测轴承配合的微小间隙。

ān zhuāng gāo jīng dù jī xiè shè bèi shí, gōng chéng shī bì xū yòng sāi chǐ zǐ xì jiǎn cè zhóu chéng pèi hé de wēi xiǎo jiàn xì.

When installing high-precision mechanical equipment, engineers must use feeler gauges to carefully detect the tiny gaps in the bearing fit.