Well, you could right-click on the tech area in the research queue and see if it says something like "Small Depleted Uranium Cannon" or "Small Anti-matter Torpedo." That is, if you've already researched Smaller Weapons. If not, then you already know there are a Small DUC and a Small AMTorp.
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The Unpronounceable Krsqk
"Well, sir, at the moment my left processor doesn't know what my right is doing." -
Freefall