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Значения термина pure silica на английском

Значения для термина "pure silica" отсутствуют.
Использование термина pure silica на английском
1
In general, the soil is light-colored soft sand, nearly pure silica.
Missionary Travels and Researches in South Africa
2
I found also a piece of palm-tree transformed into oxide of iron, and the pores filled with pure silica.
Missionary Travels and Researches in South Africa
3
Of course, it isn't pure silica, because sand deposits like that don't exist, but it's so near it's unbelievable.
Nothing in her way
4
I suppose white silver sand, sold for cleaning harness, etc., is nearly pure silica, but what am I to do for alumina?
Life and Letters of Charles Darwin — Volume 2
5
Dr. Turner found the ignited Indian tabasheer to consist almost entirely of pure silica with a minute quantity of lime and vegetable matter.
Scientific American Supplement, No. 595, May 28, 1887
6
We also estimate that the n(2) of germania is three times the n(2) of pure silica.
Pubmed
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