英语词汇“Pennsylvanian era”的翻译、意思、用法、释义-英汉汉英双解词典

单词	Pennsylvanian era
释义	Pennsylvanian era 宾夕法尼亚纪子源
随便看	drill chuck jaw drill chuck key DRILL CHUCK Medium Heavy duty drill chucktap holder drill chuck with thread adapter drill chuck with thread hole drill chunk drill circuit drill clamp drill clamp bolt drill clamp spring drill-clamshell method drill collar drill collar capacity drill collar groove drill collar lifting nipple drill collar number drill collar recess drill collars drill collar screw drill collar spiral Drill collar steel drill collar stem drill collar stiffness drill collar thread