Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back. (4) The further off this solid obstruction, the longer time will elapse for the return of the echo. (5) A sound made by tapping on the hull of a ship will be reflected from the...
now in general use in ships. Every solid object will reflect a sound, varying according to the size and nature of the object. A shoal of fish will do this. So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish. With experience, and ...
So the bat sends out these pulses—very focused bursts of sound, and echoes bounce back… Y'know, I don't think I need to draw in the echoes. Your-your reading assignment for the next class—it has a diagram that shows this very clearly—so anyway as I was saying… By analyzing ...
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back. The further off this solid obstruction, the longer time will elapse for the return of the echo. A sound made by tapping on the hull of a ship will be reflected from the sea bottom...
5 Not ___sound made by animals serves aslanguage.(l.1) a.every b.each c.the whole d.the entire 6 We have only to turn to that extraordinarydiscovery of echo-location in bats to see a case___the voice plays a strictly utilitarian role.(11.1-2) a....
The emis- sion of sonar sound groups has been reported in a number of bat species, which suggests that exercising temporal control over emissions helps bats negotiate complex or unfamiliar environments (Moss and Surlykke 2010). In par- ticular, it was suggested that the emission of double ...
sound n. 1.声音 adj. 2. sound teeth 完好的牙 a sound argument 一个无懈可击的论点 vt. 3. tosound(explore/probe) the sea / a sounding balloon 探空气球 to sound sb. on a question 就一个问题试探某人的想法 in (great/little) demand 有需求 ...
A sound made by tapping on the main body of a ship will be reflected from the sea bottom, and by measuring the time interval between the taps and the receipt of the echoes the depth of the sea at that point can be calculated. So was born the echo-sounding equipment, now in general ...
A sound made by tapping on the main body of a ship will be reflected from the sea bottom, and by measuring the time interval between the taps and the receipt of the echoes the depth of the sea at that point can be calculated. So was born the echo-sounding equipment, now in general ...
Interpulse intervals (IPIs) varied across clutter densities to reflect different compromises between using short IPIs for gathering echoes rapidly enough to maneuver past the nearest chains and using longer IPIs so that all echoes from one sound can be received before the next sound is emitted. ...