know and change the objective world 认识和改造客观世界 change of power line voltage 电源电压变化试验 ..
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微机电系统已成为人们从微观角度认识和改造客观世界的一种高新技术。
Micro electromechanical system (MEMS) is a kind of high technology with which people understand and change the objective world from microscopic view.
科学方法是人们在认识和改造客观世界的实践活动中形成的有效的规则、方式和手段。
Scientific method is the effective rules and ways formed by people in the practical activities of discovering and transforming the objective world.
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