One gallery we visited in Florence was exhibiting paintings on wood from the late Middle Ages that were gilded with gold leaf.
我们在佛罗伦萨参观的一个画廊展示着中世纪的叶子上镀金的木刻画。
It is very hard to delineate directly a gold-quartz vein by prospecting drilling or gallery and calculate its reserves due to the uneven distribution of gold in the vein.
石英脉型金矿中，金的分布极不均匀，很难用工程直接圈定矿体和计算储量。
It is very hard to delineate directly a gold-quartz vein by prospecting drilling or gallery and calculate its reserves due to the uneven distribution of gold in the vein.
石英脉型金矿中，金的分布极不均匀，很难用工程直接圈定矿体和计算储量。
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