couplingunitsandlandinggears
couplingunitsnormallyincludefifthwheelandpintlehooker,bothusedtoconnectthetruckandtractortotrailersorsemi-trailer.
Whenwesayconnection,weactullyreferthesocalled"quickconnectionandrelease"mechainism.Thiskindofdevicenormallyrequirequicklyconnectordisconnect(maybecoupleseconds?)whileatthesametime,totallysealtheconnectingandconectedunits.
Fifthewheelisthemostpo...[閱讀全文]
博文
(2011-06-11 21:42:04)