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英国人E·辛克莱完成深度只有3/4英寸的薄形黑白显象管,作为袖珍型的电视机样机公开展出。对这种样机的规格等详细情况还不清楚。这种显
Briton E. Sinclair completed a thin 3/4 inch deep black and white picture tube that was shown on the public as a compact TV prototype. The details of such prototype specifications are unclear. This is significant