wéi xiū / rén yuán / chāi xià / fā dòng jī / de / zhóu wǎ / jiǎn chá / shì fǒu / yǒu / mó sǔn

维修人员拆下发动机的轴瓦，检查是否有磨损。

The maintenance staff removed the engine bearing shell to check whether it was worn.