Duddell oscillograph

例句：

1. 1. The Duddell oscillograph was used to measure the electrical resistance of materials.
   杜德尔振荡器被用来测量材料电导率。
2. 2. The Duddell oscillograph was a revolutionary tool in the field of electronics.
   杜德尔振荡器是电子领域的一项革命性工具。
3. 3. The Duddell oscillograph was used to study the behavior of electrons in a circuit.
   杜德尔振荡器用于研究电子在电路中的行为。