推移千斤顶采用框架结构，以减少推溜力和增大移架力。
Passes the hoisting jack to use the portal frame construction, reduces pushes slides the strength and increases moves a strength.
推移千斤顶采用框架结构，以减少推溜力和增大移架力。
Passes the hoisting jack to use the portal frame construction, reduces pushes slides the strength and increases moves a strength.
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