unsymmetrical double curve turnout 偏开道岔 ; 单式不对称道岔

Double curved turnout 双开分道岔

Turnout double 复式道岔

Turnout double curved 双开分道岔

double curve turnout 双开道岔

symmetrical double curve turnout 单式对称道岔

double switch turnout 复分道岔

double guide type turnout 双导板式岔道