Is boron amorphous or crystalline?Boron can be prepared in several crystalline and amorphous forms. The well-known forms of crystallization are α-rhombohedral (α-R), β-rhombohedral (β-R) and β-tetragonal (β-T). In spec…
The European Commission has submitted to member states a new draft of sanctions against Russia, including an oil embargo. Some member states that rely heavily on Russian energy sought exemptions. Western media reported that the European Commission d…
Statistics from Lange Steel show that from January to May this year, the overall profit of the steel industry was 228.23 billion yuan, accounting for 92.6% of the total profit of 246.46 billion yuan in 2020. The performance forecasts of related liste…
Foamed concrete is a highly entrained sand cement with at least 20% air volume in the cured product.…
A recent poll in Britain found that public support for sanctions against Russia is falling as fuel and prices rise. The proportion of people willing to accept higher fuel prices as a result of western sanctions against Russia fell 14 percentage poin…
In this article, the chemical foaming agents of ADC will be talked about.…
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