对于大多数金属成矿元素 ，地壳特别是上地壳是大多数矿石和矿胎的储库 ，地壳丰度是元素富集成矿的物质基础。
For most ore metals, the continental crust, especially, the upper continental crust, is the repository of all ores and protores.
“上品细料器”指的是明末清初器物中，最高质量的瓷器，它们使用的胎土是景德镇新发现的高岭土矿，瓷土细白如雪；
"Top grade fine feeder" refers to the Ming and Qing artifacts, the highest quality porcelain, fetal soil they use Jingdezhen newly discovered kaolin, clay fine white as snow;
我国大型露天矿已普遍使用大吨位载重汽车，与之配套的巨型轮胎消耗量亦与日俱增。 人们发现在大量报废的轮胎中，相当数量是因为使用中胎压过低而损坏。
The large tonnage trucks are used in China's big opencast mines widspreadly and so consumption of giant tires is steadily on the increase.
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