tarnishing造句
2024年07月02日 18:57:04
The causes of
tarnishing gold and silver - plated connectors were studied respectively.
分别探讨了接插件镀金和镀银层变色的原因.
Bright tin electrodeposits on copper wire are susceptible to
tarnishing.
铜线材经光亮镀锡后易产生腐蚀变色.
Do they not realize their foolhardiness and which they are
tarnishing the Republic's image?
他们难道不知道自己的行为不但愚蠢,也会损害新加坡的形象?