Translation   [min:sec]   [00:04] this is how a simple electrical mechanical “hitter-knocker” works   [00:18] this is how a cherry-”kapacitron”(???) works   [00:23] this is how a dyfusional pimbdziaula works   [00:30] this is how a electro-”cabbager” works   [00:38] this is how a steel-koziówka(???) works   [00:45] this is how a safety pin works   [00:49] and other very very-complex inventi... (展开全部)