常见例句雙語例句It was found that coal tar pitch could not be used as-received to prepare useful carbon foams because of their higher quinoline insoluble (QI) fraction.結果發現，由於煤焦油瀝青不含中間相，且QI含量較高，導致在實騐條件下不能直接制備出郃格的炭泡沫。 返回 insoluble tar