Nano anti -fouling coating is one of efficient measures for solving pipe fouling problem in the urban untreated sewage cooling and heating source system.
采用新型纳米抗垢涂料是解决城市原生污水冷热源系统污垢的有效措施之一。
Achievement evaluation is one of the efficient measures of performance management in a library.
绩效评估是图书馆实现绩效管理的有效手段之一。
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