（一） ? 型号说明：以250HW-8为例：? 250—泵进（出）水口直径为250毫米。? 8—泵总扬程为8米。III. ? ?Type Instruction:Take 250HW-8 for an example:250-The diameter of inlet /outlet of pump is 250mm.8-The total head of pump is 8m. 检查泵内
