paper disk造句

• Hard roughing wheels can be made by cementing together strawboard paper disks.
• Within a day the bacterial growth surrounding the paper disk is visible.
• Cut out the paper disk just inside the pencil marking.
• The pen draws onto a paper disk that registers the lines on which the telescope is aimed.
• A filter-paper disk, impregnated with the compound to be tested, is then placed on the surface of the agar.
• The paper disk or tape had the times pre printed and the key impressed the key number on the corresponding time.
• Carbon paper disks are still used in school physics labs as parts of experiments on projectile motion or position, velocity, and acceleration.
• However, in the presence of extra phenylalanine leached from the impregnated filter paper disk, the inhibition is overcome and the bacteria grow.
• Chen has also worked with the volvelle or wheel chart, which is a set of stacked paper disks of varying sizes, sometimes with windows.
• This was a stack of copper and zinc plates, separated by brine-soaked paper disks, that could produce a steady current for a considerable length of time.
• Linden describes a growing apparatus made of Petri dishes lined with preconditioned Mailer's paper disks on which the planula of " Stylophora pistillata " are grown.
• It is a 12 " paper disk printed with pink graphics on one side and the " Crocidura Dsi Nezumi " cover in brown on the reverse.
• In regional testing, 20 to 50 礚 of liquid stimulus is presented to the anterior and posterior tongue using a pipette, soaked filter-paper disks, or cotton swabs.
• The View-Master, a device for viewing 3-D images ( also known as stereo images ) on a paper disk, was invented in 1939 by William Gruber, a Portland, Oregon, photographer.
• Paper disks were saturated with varying concentrations of methoprene and placed onto a culture of Pseudomonas putida to be incubated for two days . Results were recorded after the two day period.
• Mangili begun collecting the small punched paper disks that were left as a byproduct from the production of the holed sheets used by the silkworm breeders as cage bedding, and selling them for profit.
• The first system to supplant ballistic pendulums with direct measures of projectile speed was invented in 1808, during the Napoleonic Wars and used a rapidly rotating shaft of known speed with two paper disks on it; the bullet was fired through the disks, parallel to the shaft, and the angular difference in the points of impact provided an elapsed time over the distance between the disks.