Amendments to Regulation No 138 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility
联合国欧洲经济委员会(联合国/欧洲经委会)第138号条例修正案——关于批准静音道路运输车辆降低可听性的统一规定
Amendments to Regulation No 138 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility