基本解釋層間接縫寬度詞組短語(yǔ)短語(yǔ)bed d and joint width 層間接縫寬度bed being and joint width 層間接縫寬度bed and joint width更多詞組專業(yè)釋義機(jī)械工程層間接縫寬度土木建築工程層間接縫寬度