Most studies of these crystals have focused on the chemical makeup of the zircon itself 很多针对这些晶体的研究侧重在锆石自身的化学结构上。
2.
On all bronze valves the metal components in the waterway must not contain more than 15 % zinc in their chemical makeup 在所有青铜阀门的金属部件中，其水路部分的化学成分中锌的含量绝对不能超过15 % 。
