短語(yǔ)詞組短語(yǔ)conveyer pawl casing 輸送機(jī)棘爪套conveyer pawl casing cover 輸送機(jī)棘爪蓋elevator pawl casing 升降機(jī)棘爪套elevator bottom pawl casing 升降機(jī)棘爪套 返回 pawl casing