The size of a vibration iscalled its amplitude (振幅), so the louder the sound is, the biggerthe amplitude is.Sound waves travel at a speed of 330 metres per secondthrough air at 0℃. This speed increases(增加) if the airtemperature goes up, and decreases(减少) if the temperaturegoes ...
We can also see something else: If we increase the temperature without changing the density of the gas, i.e., if we increase the speed of the atoms, what is going to happen to the pressure? Well, the atoms hit harder because they are moving faster, and in addition they hit more ofte...
Sound must travel through matter, because it needs the vibration of molecules to travel. The matter that transports the sound is called the medium. Speed of sound The speed of sound is how fast the wave or vibrations pass through the medium or...
These booming populations attract predators. New York City is home to a million pigeons, which support large populations of raptors. But pigeons’ aptitude for swift flight, further exploited by being bred for racing, means they’re made for high-speed chases. Compared to barn owls, which are ...
The Evolutionary Mystery: Crocodile Survives A Even though crocodiles have existed for 200 million years, they’re anything but primitive. As crocodiles’ ancestors, crocodilia came to adapt to an a…
1.1 翻译的标准 第1节 翻译练习1 the power plant is the heart of a power unit for driving the machines is a 50-hp induction motor.动力装置是船舶的心脏。 驱动这些机器的动力装置是一台50马力的感应电动机。 第1节 翻译练习2 semiconductor devices, called transistors, are replacing tubes in many ...
Meditative running is not a race, there are no comparisons. Do not compete for speed, stay with yourself. What fits you the best is the best (find your own suitable speed and breathing frequency). (4)关注呼吸(鼻吸口呼,...
of the particle; (iii) the frequency spectrum corresponding to the transition process of particle vibration is the intrinsic-noise generated in viscous solid; (iv) the values of amplitude spectrum and waveform decrease when the frequency of harmonic force is far from the center frequency of ...
While we’d love to “have it all,” all the time, the reality is that life is filled with trade-offs. One of the trade-offs Ansys customers make every day is between simulation speed and fidelity. Recognizing that every product development team has its own priorities, Ansys has worked...
The ADSP-BF706 is a low cost, low power DSP with up to 400 MHz processing speed and is an industry leading choice of DSP for field instrument applications.32 It offers multiple glueless peripheral interfaces, which makes it easier to connect to external devices such as the data...