open adj.开着的；开放的；公开的v.打开；张开；展开；摊开；开始(某事物)；开张；营业；以…开头；宣布启用n.户外；公开
双语例句
When used for balancing water distribution systems, valves should always be in the fully open position at the commencement of any commissioning or flushing exercises. 如果用于平衡水分流系统，那么在投入运行或进行冲洗作业的开始阶段，阀门应该总是处于全开状态。
