Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Arabic
Chinese
English
French
German
Italian
Japanese
Polish
Portuguese
Russian
Serbian
Spanish
Swedish
Ukrainian
Terms
for subject
Water resources
containing
reference standard
|
all forms
English
Chinese
standard reference materials
标准参考物质
standard reference water samples
美国地质调查局
标准参考水样本
(USGS)
Get short URL