valve passage resistance
常见例句
- The valve is installed underground pipelines. Its drive type adopts wrench ; Through way flow passage and low flow resistance;
安装在地下管路，传动方式采用扳手，直通式管道，流阻小； - Full diameter structure of ball valve ensures the conformity of inside diameter of passage and pipeline, with the fluid resistance minimized and easy for cleaning pipeline.
全通径结构保证通道内径与管线内径一致，不但使流体阻力最小，也便于清洁通道。
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