The poverty in city is a synthetical conception. It is provided with the dynamic, relativity, sociality, objectivity and synthesis.
城市贫困是一个综合性概念，具有动态性、相对性、社会性、客观性和综合性。
Based on the conception of instantaneous motion center, a new virtual vibration system for dynamic balancing measurement is proposed.
根据瞬时运动中心的概念，提出一种全新的动平衡测量虚拟振动系统。
This paper introduces a basic conception of logarithm amplifier and a useful logarithmic amplifier using the chip of AD8313 that has a wide bandwidth, high dynamic range and high accuracy.
介绍了对数放大器的基本概念以及利用AD 8313对数放大器集成芯片研制的实用宽带、大动态范围、高精度对数放大器模块。
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