复式支架的英文

• breaking prop

• 复式:    compound; multiple; double
• 支架:    support; stand; trestle; hol ...
• 摆动式支架:    oscillating mast
• 垛式支架:    brettis; cribwork; cog timbering
• 框式支架:    [采矿工程] frame set; framing set