expandorn.扩张器expandv.使 ... 膨胀；详述；扩张；增加；张开expandable nozzle可延伸的喷管expanding element膨胀件Expandable shelter扩展方舱expanded code line扩展代码传输线expanding strategy推广策略expanding pressure膨胀压力expand one's chest扩胸expander amplifier频带伸展放大器expand chain agent扩链剂expandable coolant消耗性冷却剂