【医】 钻锯, 环钻

macular hole

blind hole【地质】油气;foramen cecum【解剖】;foramen coecum【解剖】

doughnut hole size

one radish one hole-each has his own work to do; there is nobody to spare

hole marker with hole sensor, data processing

ventilating cavity (vent hole)

air hole【机】;air-breather【机】;airflow orifice【机】

coffee shot-hole borer【植保】;Dryocoetes coffeae Egg【植保】