helical accelerator helical antenna helical-blade stirrer helical blower helical broach helical conveyer helical conveyor helical curve helical-fluted tap helical gear helical grid helical line helically-wound helical milling helical motion helical rack helical reamer helical scanning helical spring helical surface |
helical accelerator спирален ускоряващ електрод Търсената дума е намерена |