以下为句子列表：
英文: Abstract: An antifreezing ventilation system at winter in a gold mine is designed by use of the earth temperature preheating technology.
中文: 文摘:利用地温预热入风流技术，设计了金厂沟梁金矿冬季防冻通风系统。
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英文: Abstract: There are four phases and dozens of parameters in preheating flash butt welding technology used for great section workpiece's welding.
中文: 文摘:用于焊接大截面工件的预热闪光焊工艺包括四个阶段。
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英文: According to the question about preheationg winter incoming wind in coal mine of northeast area,the thought of preheating winter incoming wind by using waste drift is put forward.The method is good at saving energy and has strong feasibility,showed by pra
中文: 针对东北地区煤矿冬季入风流预热问题，提出了利用废旧巷道预热入风流的设想，通过实例计算说明，此方法节能效果好，可行性强。
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英文: Adopting step-motor drive, upper/lower &back exhausting filter structure; Auto-proportioned flux supply; special wind way design for good protection of the muzzle and avoiding flux flying to preheating zone, reducing any chance of unsafe troubles.
中文: 采用步进马达驱动，上下及后侧抽风过滤方式，助焊剂自动供给，特殊风道设计，有效保护喷嘴，防止助焊剂逃逸至预热区，减少安全隐患。
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英文: Air cannon block clearer is a special device used to prevent and remove the material blast and block of all kinds of bunker, hopper, cement preheating furnace, pipeline Y section and mine drawshaft and drawslope.
中文: 空气炮清堵器是防止和消除各类型料仓，料斗、水泥预热器窑和管道分叉处及矿山溜井、溜坡的物料起拱，粘仓闭塞等现象的专用装置。
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