常見(jiàn)例句雙語(yǔ)例句The torsion steels in two sides(outside and inside) of the arc stair tread need to be reinforced possibly to resist twist moment.對(duì)某改造工程中后增室外弧形樓梯中出現(xiàn)的裂縫進(jìn)行分析及加固處理。 返回 stair tread