{
  "text": "但此时液压马达侧负载压力较大，液压油便不会进入液压马达，而是经打开的球阀，进入支腿多路换向阀连接块内，通过支腿多路换向阀内的三通流量调节阀返回液压油箱。操作托架液压系统和架设架液压系统的任一执行机构时，均会出现上述现象。同理可分析，操作支腿液压系统和吊机液压系统的任一执行机构时，也会出现上述现象。",
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