原有同位素测厚仪存在着设备落后，监测系统功能不完善，测量精度不高，以及标定方法繁琐等不足。
The old isotope gauge has a lot of shortcoming, such as the unadvanced equipment, the imperfect monitoring system, the fussy calibration method and so on.
试验结果表明，对于产量监测系统中的谷物流量和含水率传感器，可通过标定来有效的减小测量误差；
Experiment result show that, for grain flow sensor and moisture sensor, measurement errors can be effectively reduced by calibration;
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