• Facets on the minute single crystals are clearly visible when viewed through a microscope of at least 30 power .
• A 17- power telescope ...
• Facets on the minute single crystals are clearly visible when viewed through a microscope of at least 30 power .
• A 17- power telescope ...
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012