fine adjustment knob（微调旋钮）是什么意思？音标发音+图解场景

微调旋钮 /ˈfaɪn ɐdʒˈʌstmənt ˈnɒb/ n

English: fine adjustment knob · 微调旋钮

释义：High-precision focusing device for adjusting the distance between the objective and the object under study.

这个词出现在以下图解场景（2）

双目显微镜 显微镜