例句與造句

1. As a recording device he first used the Siemens recording galvanometer, which allowed him to record electrical voltages as small as one ten thousandth of a volt.
2. The signals from seismometers are processed by 15.5 Hz recording galvanometers which record the seismograms to a reel of of film at the speeds between per minute.
3. However, more sophisticated measuring devices, such as the Siemens double-coil recording galvanometer, which displayed electric voltages as small as one ten thousandth of a volt, led to success.
4. It's difficult to find recording galvanometer in a sentence. 用recording galvanometer造句挺難的