檢視煤变质程度的原始碼

[[File:煤变质程度.jpg|缩略图|[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E7%85%A4%E5%8F%98%E8%B4%A8%E7%A8%8B%E5%BA%A6%20%20%E6%90%9C%E7%8B%90&step_word=&hs=0&pn=3&spn=0&di=80300&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=2&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=-1&cs=2959806449%2C351460982&os=1667102521%2C207379013&simid=3152286486%2C3810555856&adpicid=0&lpn=0&ln=915&fr=&fmq=1624054104044_R&fm=result&ic=&s=undefined&hd=&latest=&copyright=&se=&sme=&tab=0&width=&height=&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fp0.ifengimg.com%2Fpmop%2F2018%2F0331%2F4B284A81E2FA711235A8482C828212C9F9AFB1DC_size27_w557_h366.jpeg%26refer%3Dhttp%3A%2F%2Fp0.ifengimg.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1626645882%26t%3Da430be0641248a08926276c3b478c9d9&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bf5i7_z%26e3Bv54AzdH3FwAzdH3F8cmam8bmn_8b0c99&gsm=4&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined 原图链接][https://www.sohu.com/a/156061863_187544 来自搜狐]]]
'''煤变质程度'''，源于学科：煤地质学；在温度、压力、时间及其相互作用下，煤的物理、化学性质变化的程度。