thermal roughening n.— «In February, crews started blasting the sidewalks with a blowtorch—or “thermal roughening,” as they call it—to burn away the slippery top layer of stone.» —“Mayor Bloomberg orders $1M worth of...
thermal roughening n.— «In February, crews started blasting the sidewalks with a blowtorch—or “thermal roughening,” as they call it—to burn away the slippery top layer of stone.» —“Mayor Bloomberg orders $1M worth of...
