低位肠的克隆氏病lower intestinal Crohn's disease
双面定厚砂光机upper-lower sanding-ga(u)ging machine【木】
食道下部高压区lower(esophageal)high-pressure zone
右下腹right lower quadrant
下肢lower limb
下齿痛aching among the lower teeth
下焦水寒lower burner water-cold
【计】 偏小近似值lower approximate value