occlusion
名词 occlusion:
closure or blockage (as of a blood vessel)
(meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft
同义词:occluded front
(dentistry) the normal spatial relation of the teeth when the jaws are closed
an obstruction in a pipe or tube
同义词:blockage, block, closure, stop, stoppage
the act of blocking