practical workerの例文

• The only real alternatives are trade textbooks and trade journals, which are poorly index and difficult to access, often known only to practical workers in the subject-- and very likely to be out of date ( especially textbooks ).
• Diaconis said that Dobrushin " pioneered new techniques for rigorous mathematical analysis of random phenomena " and that his greatest achievement " was giving a rigorous foundation for statistical mechanics, " and finding " new patterns completely unexpected by practical workers ."