double-thread hob 双头滚刀
double thread screw 双头螺纹
double thread shoe border stitcher 双线鞋沿缝合机
double-thread screw 双头螺纹 ; 双纹螺纹螺钉
double-thread auger [机] 双头螺旋钻头
double-thread worm 双头蜗杆
double thread tunnel 双线隧道
double thread hob 双头滚刀
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。
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