crawlv.爬行;卑躬屈膝;自由式游泳n.爬行;匍匐而行;[体]自由式游泳
crawler bulldozer履带式推土机
crawling traction履带牵引
crawler excavator履带挖掘机,覆带挖土机
crawler mechanism行走机构
Crawling problems爬行问题
crawler attachment履带附件
crawltitle machine旋转式字幕机
crawler rock drill履带式凿岩机
crawler coalcutter履带式截煤机
crawler dump wagon履带式倾卸车