The year-round outdoor operation of metro and high-speed rail systems places great demands on the durability of vehicle linkage mechanisms, and the need for a clean interior environment implies that moving parts may not use lubricants.

The year-round outdoor operation of metro and high-speed rail systems places great demands on the durability of vehicle linkage mechanisms, and the need for a clean interior environment implies that moving parts may not use lubricants.

Ar mhaith leat cruinniú a chur in áirithe, má tá ceisteanna agat faoi aon cheann dár dtáirgí, nó ar mhaith leat comhrá gairmiúil a bheith agat linn? Déan teagmháil linn, agus tabharfaimid freagra chomh luath agus is féidir linn.