Siemens' scope of supply includes: train control and diagnosis system, traction inverter, auxiliary inverter, brake resistor, HV box and Pantograph, as well as traction motor and gear box.
2
目的评价前方牵引器联合快速扩弓矫治恒牙早期骨性前牙反牙合的有效性。
Objective To evaluate the maxillary protraction appliance permanent teeth combined rapid expansion of early bone anterior crossbite effectiveness.
3
方法：在自行研制的颧骨颧弓骨折微创快速牵引复位固定器基础上，进行多项改进。
Methods Based on the former instrument for rapid tiny-hurt traction, reposition and fixation of fracture of zygomatic bone, various aspect have been improved.
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