1. The product applies to the sculpture on material such as metal and metalloids such as glass, China, marble broadly. 本产品广泛适用于金属及玻璃、瓷器、大理石等非金属等材料上的雕刻。
2. This is causing an imbalance between the supply of metals and metalloids and their demand from consumers - a concept referred to as' criticality. '. 这样会导致金属及类金属的供应和消费者需求之间的不平衡，被称为“临界状态”。
3. Using these three categories, researchers from Yale University led by Professor Thomas Graedel were able to see which metals and metalloids are most at risk within each group. 通过使用以上三种指标，托马斯•格雷德尔教授等来自耶鲁大学的研究人员得出了处于濒危状态的金属名单。
