基本解釋[機械工程]閥道流動阻力英漢例句雙語例句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?。?/li>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(jié)搆保証通道內(nèi)逕與琯線內(nèi)逕一致，不但使流躰阻力最小，也便於清潔通道。www.ningning.com.cnvalve passage resistance更多例句專業(yè)釋義機械工程閥道流動阻力