短語(yǔ)詞組短語(yǔ)quarter -turn stair 曲尺樓梯Quarter r Turn 四分之一轉(zhuǎn)double quarter -turn 帶有斜踏步的雙直角轉(zhuǎn)彎樓梯belt quarter -turn 直角回轉(zhuǎn)皮帶reversible quarter -turn plough 雙向四分之一翻轉(zhuǎn)犁 返回 quarter turn