For example, the yield of the North Korean test conducted underground in 2006 was less than a kiloton (the equivalent of 1,000 tons of TNT).

• 例如2006年，北韩在地下进行的核子试爆，威力不到1000公吨黄色炸药爆炸释放的能量，但立刻就被侦测及辨识出来。