firming board的用法和樣例：
例句
- The upper position lr pressing board can be set randomly to reduce unnecssary idie travel.
壓板上浮位置任意設定，減少不必要空行程。 - The empty space processing , adopt two to the brake block excircle fixes position , pressure board speeds up carrying out treating.
對于剎車(chē)片的外圓加工，采用兩空定位，壓板加緊進(jìn)行加工。
