各安全阀旁路的手动放空阀? 原文: 回收塔预热过程中,通过操作甲醇汽液分离罐安全阀副线的手动放空阀。 译文: during preheating of the recovery column, stabilize and keep the system pressure of about 3 kgf/cm2g by operating the manual vent valve of the methanol gas-liquid separator safety vave by-pass . (原始开车过程中) 求助内容:by-pass用法正确否,以及对其它内容的理解正确否! [ ]查看更多