词汇	半线
释义	半线医half line
随便看	double ebb double eccentric double eccentric butterfly valve double eccentric connector double-eccentric connector double-eccentric fiber-optic connector double eccentric gear Double-eccentricity half-ball valve double eccentricity mechanism double echo double echo check double economic functions double e core double ectopic tachyarrhythmia doubleedge double edge double-edge double-edge blade double-edge chisel double edge coloring double edge crack double-edge crack doubleedged double edged double edge reversible flail knife