作者: Jonathan A. Jaffe
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摘要: A manually operated, handled grout brush has an outer housing which encloses upper and lower contiguous spaces. Electric batteries in the space run electrical motor, powers gearing to rotate two sets of brushes, a head with rigid bristles for hard scrubbing scouring dirty, mildewed, stained rough surfaces, tile may include one or common scrub brushes cleaning glossy, smooth surfaces.