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    4 comments  ·  My Seeed Idea » I wish  ·  Flag idea as inappropriate…  ·  Admin →
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    Anonymous commented  · 

    Ultrasonic flowmeters use sound waves to determine the velocity of a fluid flowing in a pipe. At no flow conditions, the frequencies of an ultrasonic wave transmitted into a pipe and its reflections from the fluid are the same. When the fluid moves faster, the frequency shift increases linearly. http://www.krogerfeedback.com

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    117 comments  ·  My Seeed Idea  ·  Flag idea as inappropriate…  ·  Admin →
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    Anonymous commented  · 

    About Expedited Delivery. Expedited Delivery is available on a number of items that are not available for One-Day or Express Delivery. Expedited Delivery is available only to UK addresses. If you don't see the option to choose Expedited Delivery at checkout then either your item or address isn't eligible. https://tellthebell.us

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