block and tackle

n.

滑轮，滑车设备；

Block and tackle
Block and tackle
Block and tackle
Block and tackle: CTLA4Ig takes on lupus
How to block and tackle the face.
Block and tackle window balance with integrally molded middle carriage assembly and cord
Nonlinear Analysis of Cable Net Structures Suspended From Arches with Block and Tackle Suspension System, Taking into Account the Fr...
Block and tackle tension sutures in keystone island flaps
Block and pulley tackle suspension for Jacquard machine and Jacquard machine with such block and tackle pulley suspension
The dynamic analyses of block and tackle hoist
Dynamic analysis of a beam on block-and-tackle suspension system: A continuum approach
THE BLOCK AND TACKLE EXPERIMENT AGAIN
21443 Seismic Control Structure using Block and Tackle System : Part 6. Shaking Table Tests of Amplification Mechanism using the One...