电力生产与电网运行应当遵循安全、优质、经济的原则。
Electric power production and power network operation shall be in line with the principles of safety, high quality and economy.
把统计的原则与技术应用在生产的各个阶段，能直接以经济方式制造出有用且有市场的产品。
The application of statistical principles and techniques in all stages of production directed toward the economic manufacture of a product that is useful and has a market.
在设计款式上，既要被消费者认可又要能符合生产上经济工料的原则。
In the design style, it is necessary be recognized by the consumers and also be able to meet the production quantity of economic principles.
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