词汇	coal absence
释义	coal absence 煤层缺失
随便看	marine pilot marine pipe fitter marine pipeline marine pipeline protection marine pipelines marine piping marine piping component marine piston type chiller marine piston type condensing unit marine placer marine plain marine planation marine plane marine planetary reduction gear marine planktological laboratory marine plankton marine plankton ecology marine planktonic diatom Marine planktonic ecosystem marine plant marine plantation marine plant community marine plants Marine plants grow on the sea bed marine plastic-covered cable