This paper adopts questionnaire survey and case interview method of ancient agriculture occupation training state enterprises in the city of Y, know how to stop.
本文重要采取问卷查询拜访和个案访谈等办法对Y市古代农业企业的职业培训状态停止懂得。
This paper analyses principle, error, and unstable state of determining the electric stop watch by means of time-interval method of electric counter. A simple gate-control method is presented at last.
分析了电子计数器时间间隔法测定电秒表的原理、误差及不稳定性，并且介绍了一种简便的门控法。
This paper analyses principle, error, and unstable state of determining the electric stop watch by means of time-interval method of electric counter. A simple gate-control method is presented at last.
分析了电子计数器时间间隔法测定电秒表的原理、误差及不稳定性，并且介绍了一种简便的门控法。
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