<span><span style、" font-family: 宋体;">抽水机械</span></span>
<span><span style、" font-family: 宋体;">动力装置</span></span>
<span><span style、" font-family: 宋体;">高压水泵</span></span>
<span><span style、" font-family: 宋体;">管路系统</span></span>
<span><span style、" font-family: 宋体;">喷射井管</span></span>