常见例句雙語例句Resinite is a rich n1aceral in Teriary humic coal, boghead-cannel coal and oil shale fromHuangxian Coalfield.黃縣煤田第三紀腐殖煤、藻燭煤、油頁巖顯微組分富含樹脂躰。 返回 boghead shale