The utility model discloses a double thread fastening device.
本实用新型公开了一种双头螺纹紧固装置。
It is suitable for double thread lockstitch sewing of light or medium weight material.
适用于薄料、中厚度料的双线锁式线缝缝纫。
The sealing principle of sealing cavity in single thread twin screw pump is the same as that in double thread twin screw pump.
单头双螺杆泵与双头双螺杆泵密封腔的密封原理相同。
The design points and practical application results of large diameter double thread hob to machine large module gears or large profile shifted gears are introduced.
介绍了加工大模数、大变位齿轮的大直径双头滚刀的设计要点及实际应用效果。
Conclusions There a significant curative effect in the treatment for horseshoe-shaped perianal abscess by the procedure of incision and double thread-drawing drainage.
结论切开双挂线对口引流术治疗蹄铁型肛周脓肿疗效显著。
Conclusions There a significant curative effect in the treatment for horseshoe-shaped perianal abscess by the procedure of incision and double thread-drawing drainage.
结论切开双挂线对口引流术治疗蹄铁型肛周脓肿疗效显著。
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