The utility model discloses a burner used for quenching in hole, in particular suitable for quenching the partial surface flame in pin hole at hook tail of hook of the train.
本实用新型公开了一种用于孔内淬火的燃烧器，特别适用于列车车钩钩尾销孔局部表面 火焰淬火。
However, in most cases, only the use of welding method, cored wire solder in the pin-hole-shaped tail.
但多数情况下，只能采用焊接的方法，将芯线焊在孔形插针的尾部。
The utility model discloses a Kirschner pin with a central hole on the tail end, belonging to a surgery medical device, in particular to a fitting for a bone drill.
本实用新型公开了一种尾端带中心孔的克氏针，属于外科医疗器械，特别是骨钻的附件。
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