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The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.

Without rules, there can be no true art.

石油和天然氣領(lǐng)域的創(chuàng)新不是選擇，而是可持續(xù)發(fā)展的必需。