travelling block
听听怎么读
英 [ˈtrævəlɪŋ blɔk]
美 [ˈtrævlɪŋ blɑk]
是什么意思
动滑轮；动滑车；
学习怎么用
权威例句
Trolley and traveling block systemTraveling blockDiscuss on Character of Traveling Block-Crown Block-Drawworks System Kinematics and DynamicsAnalysis of Important Components of YC 450 Traveling Block with Finite Element MethodFailure analysis of traveling block hook fracture and preventative measuresCombined traveling block and casing hookInfluence of Process Design on the Deformation of the Guide Key for Traveling Block HookAnalysis on Fatigue Test and Fatigue Property of Traveling Block and Rotary Hook MaterialFatigue Test and Analysis on the Material of Traveling Block and Rotary HookDevelopment of isolation traveling block
