尾lower part of root
右上下导数right-hand upper lower derivative【数】
低位肠的克隆氏病lower intestinal Crohn's disease
【纺织；造纸】圈结线线轴、用于下部纱线的线轴looper thread bobbin, bobbin for lower thread
双面定厚砂光机upper-lower sanding-ga(u)ging machine【木】
右下腹right lower quadrant
低等植物lower plant
下齿痛aching among the lower teeth