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。
The author proposes that aerial survey camera should be calibrated with the same filter in…
文章建议，航摄仪在检定时应加戴航摄时使用的滤光片。
The author proposes that aerial survey camera should be calibrated with the same filter in…
文章建议，航摄仪在检定时应加戴航摄时使用的滤光片。
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