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• In steel grinding, the chemical reactivity of diamond may be (or present) a problem.
• The possible role of phosphorus in prebiotic syntheses poses (great) difficulties.
Русско-английский научно-технический словарь• In steel grinding, the chemical reactivity of diamond may be (or present) a problem.
• The possible role of phosphorus in prebiotic syntheses poses (great) difficulties.
Русско-английский научно-технический словарь