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AUTOMATIC TANK GAUGING SYSTEM WITH A QUASI-STATIC REFERENCE SUBSYSTEM
AUTOMATIC TANK GAUGING SYSTEM WITH A QUASI-STATIC REFERENCE SUBSYSTEM
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机译：具有准静态参考子系统的自动计量系统
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摘要
An apparatus for measuring liquid levels and leak rates in a storage tank, using an acoustic transducer (22) and a quasi-static reference device (28) that positions an acoustic target (46, 48) within a predetermined distance range below the surface of the liquid (32).
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