“precious metal”的概念、定义、翻译、参考文献-科学参考

单词	precious metal
释义	precious metal [`presh·ǝs `med·ǝl] ^METALLURGY A relatively scarce, valuable metal, such as gold, silver, and members of the platinum group.
随便看	central office central office line central orbit central paralysis central peak central placentation central plane central pocket loop central point central pressure central processing unit central-processing-unit time central projection central quadric central sulcus central terminal central valley central water Centrarchidae centric centrifugal centrifugal atomizer centrifugal barrier centrifugal brake centrifugal casting

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。