gig·a·ton 
(gĭgə-tŭn′, jĭg-)
(gĭgə-tŭn′, jĭg-)n.
A unit of explosive energy equal to that of one billion (109) tons of TNT.
| 单词 | gigaton |
| 释义 | gig·a·ton (gĭgə-tŭn′, jĭg-)n. A unit of explosive energy equal to that of one billion (109) tons of TNT. |
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