权威例句
Field Emission UltramicrometerOptical ultramicrometer technique utilizing a composite diffraction gratingNote on the application of the ultramicrometer to the microbalanceXI. Note on the application of the ultramicrometer to the microbalanceLXVI. Note on the ultramicrometer used as a differential micromanometerVI. The recording ultramicrometer: its principles and applicationCrystal oscillator ultramicrometerCrystal oscillator ultramicrometerObservations of Plant-growth with the Recording UltramicrometerNote on the ultramicrometer used as a differential micromanometer