hallmarking

v.

给（金、银）打上纯度印记( hallmark的现在分词 )；

1. One hallmark of a good politician is his ability to influence people.
   衡量一个优秀政治家的标志之一就是他影响大众的能力。
2. Clear expression is the hallmark of a good speaker.
   (喻)清晰的表达能力是一位出色的演说家的特征。
3. The research, carried out on mice, suggested caffeine hampered the production of the protein plaques which are the hallmark of the disease.
   研究人员用老鼠做实验，发现咖啡因可以阻止蛋白斑块积聚，而这种蛋白是早老年性痴呆发病的典型特征。

1. Given the prevalence of synthetic Alexandrite, they are also a fascinating hallmark of authenticity that helps us distinguish real gems from artificial impostors.
   在人工合成亚力山大石流行的今天，内含物是鉴别宝石天然纯度的一个重要标志，有助于我们将天然宝石与人工合成赝品区别开来。

Hallmarking
Hallmarking
Palladium Hallmarking in the UK
International hallmarking – pipedream or possibility?
Hallmarking verification process and system and corresponding method of and system for communication
Building a mouse model hallmarking the congenital human cytomegalovirus infection in central nervous system
Pneumatic unit use with built-in tank in metal rolling hallmarking impact mechanisms
Amending The Hallmarking Act 1973 In Respect Of Hallmarking Articles Made Of Mixed Metals And To Extend The Exemption From Hallmarki...
Consultation on amending the Hallmarking Act 1973 in respect of articles made of mixed metals and to extend the exemption from hallm...
The Gold Smoulder; Chris Upton Examines the Part Birmingham Has Played in the Hallmarking of Precious Metals since the 18th Century