main
main-frame
mainframe
mainframe-assisted
main-line
main-spindle
mainspindle
mainstream
maintain
maintainability
  maintenance
maintenance-free
major
major-diameter
make
make-before-break
make-break
maker
makespan
make-to-order
make-to-stock

    maintenance man-hours

    время в человеко-часах на обслуживание (напр. станка, цеха и т.п.)