简而言之,衡量国家经济福祉的核心指标就像一台计算器,只能增加,不能减少。
In short, the nation's central measure of economic well-being works like a calculating machine that adds but cannot subtract.
保证每一台干燥机在用户的使用中均能达到设计的技术经济指标。
Dryer ensure that every user in the use of technology can meet the design of economic indicators.
经过多次试验和反复补充修改设计,最终制成了一台具有较高性能指标的高压开关电源样机。
After many times tests and modifying design, a sample machine of switch high voltage power supply with high performance index is finished.
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