Depending on how the researchers calibrated their clock, the data point to an origin of domesticated rice around 8, 200 years ago.
通过科研人员校对“分子钟”，数据显示出该驯化水稻在大约8200年前的原始稻种。
Optional dust filter? Individually point calibrated? Combination humidity, temperature transmitters available? Threaded or wall box mount? High quality at low cost.
可供选择的灰尘过滤器？单独点校准？可使用湿度，温度传感器？螺纹安装和墙面安装？高质量低成本。
By using calibrated image, it can measure plane absolute displacement of worktable automatically via feature point extraction and gray vector matching.
该方法采用事先通过标定的图像，对自然标志(特征点)的提取和基于灰度向量匹配来完成绝对位移的测量。
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