trigonal planar molculetrigonal prismtrigonal pyramidtrihydric alcoholtrimorphoustringular planar moleculetrioxidetriple bondtriple pointtriplettripodtripod ligandtritiumtroubleshootingtroughtrue copolymertungstentunneling processturbidimeterturbidimetric analysisturbidimetryturbidityturbulenceturbulent flowturningsturns countertwisboat chairtwist boat formtwisting vibrationtwo chromatographytwo demensional chromatographytwo dimensional latticetwo necked flasktwo phase regiontypical sample