Download
Close

Автор:
id:
Ключевые слова:
application, background, biology, black, casting, chemical, chemistry, class, concentration, concept, development, discovery, education, elasticity, elongation at break, engineering, equipment, experiment, failure, fun, industrial, industry, instrument, iron, laboratory, material, materials science, mechanical, mechanical strength, microscope, object, people, properties, property, research, sample, schoolboy, science, scientific, scientist, specimen, steel, strength, studying, technic, technical, technology, test, tool, white,