flow development length
... 直管式标准体积管：straight pipe prover 直管段长度：flow development length 直观形象：audio-visual image ...
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其安装位置对直管段长度要求短、压损低、精确度高、维修量少，性能稳定，并介绍了应用情况。
Its installation location involves shorter straight pipe section, low pressure loss, high accuracy, small amount of maintenance and stable performance. The application status is a...
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