当一根管路中隔断阀两侧的管道等级不同时的翻译：When cut off valve in a pipe on each side of the pipe is not the same as 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

When a pipeline block valves on both sides of the pipe is not the same level

When cut off valve in a pipe on each side of the pipe is not the same as

When in a pipeline isolating valve both sides pipeline rank different

When a pipe in the pipe grades subareas valve two side without at the same time

When cut off valve in a pipe on each side of the pipe is not the same as