通过向管子侧孔通气就可以产生泡沫。
This frothing is achieved by passing the gas through side holes in the tube.
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 Cro ipe fitting.
另外12个椎体做空心侧孔椎弓根螺钉的周期抗屈试验。
Periodical bending resistance test in screws with hollow lateral holes in pedicle of vertebral arch was made on the rest 12 vertebrae.
应用推荐