steep side expansion 陡帮扩帮
Methods 21 cases of such patient were received the lip-side expansion.
方法对21例患者进行上颌唇向扩弓活动矫治器治疗。
Suitable for side expansion processing of Tee pipe fitting and Cro ipe fitting.
适合三通四通管件侧孔的预胀型加工。
Suitable for side expansion processing of Tee pipe fitting and Cross pipe fitting.
适合三通四通管件侧孔的预胀型加工。
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