| 摘要 |
In a Fourdrinier papermaking machine, the variation in the mass of the slurry along the length of the Fourdrinier travelling forming screen and the rate of water drainage therethrough are determined by a radioactive wire threaded along the length of the screen, or a plurality of radioactive sources successively disposed therealong, in conjunction with either a single radiation detector moved synchronously with the screen or a plurality of detectors monitored continuously or scanned synchronously with the screen movement.
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