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电话新产品介绍刘正生手较式无线电话日本采用９００兆赫高频，发明了手表电话ＫＸ—Ｔ９９００。与一般使用４６～４９兆志的无线电话不同，它可以避开外来无线电波的干扰，接收效果良好。此外，它还有防窃听功能。谁企图窃听这种电话，只能听到乱糟糟的杂音。其外型小巧...
Telephone New Products Liu Jung-sheng Hand-held radiotelephone Japan invented the watch phone KX-T9900 using 900 MHz high frequency. Unlike general wireless phones that use 46 to 49 megabytes, it avoids interference from external radio waves and provides good reception. In addition, it also has anti-wiretapping capabilities. Whoever attempts to eavesdrop on this type of phone can only hear messy noises. Its small size ...