当具有较短连架杆的主动曲柄（driving crank）做匀速周期性转动时，具有较长连架杆的从动曲柄（driven crank）在一定阶段的转动轨迹上，作周期性的变角速度的回转运动。
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The issue before the billet furnace designed for device, a hydraulic cylinder-driven crank linkage, the completion of the billet movements, translation.
本课题设计的加热炉前方坯取料装置，采用液压缸驱动曲柄连杆机构，完成钢坯的升降、平移。
The mechanism driven by a bidirectional pneumatic cylinder for climb robot is composed of two groups of slider-crank mechanism in series.
本机构由两组曲柄滑块机构串接而成，双作用气缸驱动，实现机械手的主爬升运动。
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