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。
When I returned, the water had all boiled away and the flame had burnt a hole in the kettle.
我回来时，水都烧干了，火把壶底烧出了一个窟窿。
The plastics-steel combination flame-retardant barn ventilator has the advantages that: first, the plastic container has a plurality of forming changes, high hole rate and good ventilation;
本实用新型具有以 下优点：一是塑料的器体成型变化多，开孔率高，通气性好；
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