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Motion and force of the solid plug in the solid conveying zone were analyzed deeply in the two equivalent cases of the inner screw.
在固体输送段对内螺杆的两种等效情况下固体塞的运动和受力作了深入分析。
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The static solids always exist in the duct when the solid-plug is moving.
料栓运动时，管道中始终有静止料层。
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