hydraulic jacks短语¹³¹⁶²⁰⁺³ 基本例句 立式千斤顶 Exterior wall of building can be transposed subsection by subsection with shoring by steel tubes and hydraulic jacks. This way is quick, safe and reliable, and it will also cut the cost. 在建筑物外墙因故置换可采用同层钢管支护，千斤顶固定，分段置换的施工技术，可收到投资少，施工快安全可靠的效果。 pacino.blog.tianya.cn