But still the shortage of essential medicines and medical facilities such as service cars, abdominal supersonic plexors, etc. prevents further extension of mobile service teams and the assurance of an exact circuit cycle.
但是，基本药品和医疗设施，诸如，医疗车辆、子宫超声波探测器等的短缺，也阻碍了流动医疗服务队扩大服务范围和确保确切定时的巡回周期。