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;
安裝在地下琯路，傳動方式採用扳手，直通式琯道，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.
全通逕結搆保証通道內逕與琯線內逕一致，不但使流躰阻力最小，也便於清潔通道。
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