这时候他接到命令停止他的盲目试验，转而开发抗生素。
He was ordered to stop messing about, and to develop antibiotics instead.
在变矩器的选型工作中，应用外特性的图解计算法能提高其准确性，避免试验的盲目性。
During the work of choosing converter, the accuracy of type chose can be increased and the blindness of testing can be avoided by using graphic calculating method of outer characteristics.
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