求翻译：3PCS（19#—21#）样品在常温下固定于专制工装上，将输出轴在工作行程一半的位置卡住，连续堵转2小时，试验后电机能正常工作。是什么意思？

3pcs (19 # -21 #) samples at room temperature, fixed in the autocratic tooling on the output shaft stuck in the half of the position of the working stroke, continuous stall two hours, after the test motor can work properly.

3PCS (19 #- 21 #) samples at room temperature to the dictatorship, on the output shaft in the stroke of half-a place to plug in for 2 hours, the pilot after syndrome.

3PCS(19#-21#) sample fixes under the normal temperature on the despotic work clothes, catches the output shaft in a power stroke half position, stops up continuously the extension for 2 hours, after the experiment the electrical machinery can the normal work.

3PCS (19#-21#) sample at room temperature fixed on the authoritarian tooling, stuck in the working stroke of half of the location of the output shaft, rotor 2 consecutive hours, after the pilot functions work properly.

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