main collectormain drainmain entrymain fanmain hole or main holes or main holesmain scarpmain sewermain sewer¡ trunk sewermain shaftmain stemmain stream or masterstrem or masterstrem or trunkstreammain transformermain water or tablemainframemainsmaintenancemaintenance control index or mci or mcimaintenance inspectionmajakite or mayakite or mayakitemajor elementmajor head friction lossmajoritemajungatholusmakatitemake or up capacitymake or up stream flow regulationmakinenite or maekinenite or maekinenitemaking holemakovickyitemalachitemalanitemalayaitemalchitemaldonitemale threadmaleevitemalhmoodite or mahlmoodite or mahlmooditemalignitemalinkoitemalladritemallard’s law or mallard’s or mallard’smallarditemalleabilitymalleable cast ironmallestigitemallophagamalloseismicmalmmalmstonemalthacite
