operating instrument的用法和樣例：
例句
- Some switches also contain a rheostat to control the brightness of the instrument panel lights.
一些開(kāi)關(guān)也包含一個(gè)可變電阻器，控制儀表板燈的燈光亮度。 - The control instrument receives the load current signal and speed signal and calculates an instantaneous flow value and a cumulative weight valve.
控制儀表接收載荷電流信號和速度信號運算一個(gè)瞬時(shí)流量值和累積重量。
