关于ballasts的百科

• ballasts造句怎么写

• Also,someballastsmanufacturedafter1978containPCBsorthecarcinogenicchemicalDEHP.Usedfortestingthetransistorsofelectronicballasts,energy-savinglamps.Railwayapplications-Rollingstock-D.C.suppliedelectronicballastsforlightingfluorescentlamps.Fluorescentl...
• 2017-06-2115076