词汇	伸缩梯
释义	伸缩梯 extension ladder梯
随便看	petroleum reserves system petroleum reserve system PETROLEUM RESERVE SYSTEM IN CHINA petroleum reserve unit petroleum resource assessment Petroleum Resource Automated Management Petroleum resource consumption petroleum resource petential Petroleum resource potential petroleum resources petroleum resources assessment petrole um resources evaluation petroleum resources properties petroleum refining petroleum refining and chemical speciality petroleum refining and petrochemical plants petroleum refining capacity petroleum refining catalyst petroleum refining catalysts Petroleum Refining Engineer petroleum refining enterprise petroleum refining furnace petroleum refining industry petroleum refining model petroleum refining plant