YYP135 Falling Dart Impact Tester muaj feem xyuam rau qhov tshwm sim thiab lub zog ntsuas ntawm qhov poob dart los ntawm ib qho siab tiv thaiv cov yeeb yaj kiab yas thiab cov nplooj ntawv nrog tuab tsawg dua 1 hli, uas yuav ua rau 50% kuaj cov qauv tsis ua haujlwm.
