更多dynameter例句

1. The ratio of the diameter of the object glass to that of the image as seen in the dynameter gives the power of the instrument.
2. The end of the dynameter next to the eyepiece of the instrument is ruled with a series of lines one-hundredth of an inch apart.
3. Dynameter, dī-nam′e-tėr, n. an instrument for measuring the magnifying power of a telescope.