词汇	煤深成变质
释义	煤深成变质医deep burial metamorphism of coal
随便看	alternative drawee alternative drum alternative duties alternative duty alternative education alternative-education alternative electric field alternative electric generation alternative electromechanical system alternative electro mechanical system alternative electro-mechanical system alternative emotion alternative employment alternative ending alternative energies alternative energy alternative-energy alternative energy, alternate energy alternative energy resource alternative energy resources alternative energy source alternative energy sources alternative entry alternative equipment alternative escape route