hard wood tar pitch

TAR-英汉词典... ... hard wood tar [化]阔叶材焦油,硬材焦油 hard wood tar pitch 硬材沥青 hardwood tar 硬木焦油沥青 ...

针叶材焦油,soft wood... ... ) hard wood tar 阔叶材焦油 ) hard wood tar pitch 阔叶材(焦油)沥青 ) conifers 针叶材类 ...