The hardness of silica was carefully studied by Auerbach, who found a surface of vitreous silica to be less hard than either of the principal faces of quartz. Most commercial silica glass is ...
They identified the achievement and maintenance of maximal erection hardness as a key determinant of patients' overall satisfaction with treatment, as well as sexual satisfaction, self-esteem and ...
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This model is particularly suitable when users require a high-quality testing device for low-sample throughput. Solidly-built machine—“made in Austria” Hardness testing module has a wide test force ...