calibrated chain meaning in English

标准链
校准链

4 short link chain for lifting purposes . specification for grade m calibrated chain
提升用短环节链.第3部分: m
Mining equipment . shackles for calibrated chains en scrayer conveyors . specifications . acceptance conditions
采煤设备.链节输送机校准链连接环.验收条件
Mining equipment . round link type chain universel connectors for calibrated chains . specifications . acceptance testing
采煤设备.经通用连接链环用圆钢丝校准链