A company named B B Toot is mentioned in travel reviews as a transfer service provider in the Port Douglas/Cairns area. One reviewer on Tripadvisor noted a negative experience with their staff's politeness compared to other local services.
Calculations involving the ratio of specific heats or efficiency formulas for reciprocating engines. Bb.tOot
It may be a misread or shorthand for variables like Tbcap T sub b Tacap T sub a A company named B B Toot is mentioned