长伸缩式蒸汽吹灰器
lengthen and shorten mode steam blowing ash eguipment
伸缩式液压挖土机
hydraulic telescopic excavator
伸缩式线盘卸料器
collapsible stripping spider
伸缩式五轮软椅
telescopic soft chair with five wheels
伸缩式双刃镗刀
Retractable double-cut boring cutter
伸缩式三角形模糊集
telescopic triangle fuzzy sets