世界上第一台电脑——近30吨埃涅阿克（1947年），使用了18000个电子管，另加1500个继电器以及其它器件，其总体积约90立方米，重达30吨，占地170平方米，需要用一间30多米长的大房间才能存放，是个地地道道的庞然大物。
The first general-purpose computer, the nearly 30-ton ENIAC (1947), contains 18,000 vacuum tubes, 70,000 resistors and 10,000 capacitors.
我们手头的其中一台XJ-A130， 开箱时最大流明输出1228流明，但使用过130小时之后其最大流明输出降为949流明，降幅达23%。
On one of our XJ-A130s, the max lumen output was 1228 when it was new. After 130 hours of use its maximum brightness dropped to 949 lumens, which is a 23% reduction.
上海中心气象台的业务使用表明，总体估计的准确率达70 %左右。
The operational application in Shanghai Meteorological Center shows that its average estimate accuracy reaches about 70%.
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