But for the first time in human history, that is changing-and with shocking speed.
但是，这种情况在人类历史上首次发生了变化，而且，速度惊人。
The changing regularity of drying speed, moisture content and surface temperature of wood was determined and analyzed at different microwave heating power and different heating time.
测定并分析了不同微波加热功率、加热时间条件下木材的表面温度、干燥速度和含水率的变化规律。
In this paper changing threshold segmentation and grid technology is applied so that computer vision system is to save time, to improve accuracy and processing speed.
本文中可变阈值分割方法和“栅格”技术的采用，使该计算机视觉系统节省了时间，提高了精度和识别处理的速度。
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