This article introduces and exports of leatheret industry and the situation of the related industries.阐述了我国人造革、合成革行业发展现状及发展特点,提出了中国人造革、合成革行业的工作重点及发展方向....
Medium frequency transformer quenching is used for workpiece diathermy, quenching, annealing, brazing, etc.中频淬火变压器用于工件的透热 、 淬火 、 退火 、 弯管钎焊等工艺.sample workpiece样件, 样品Light - vehicle headlamp reflector is constituted of par...