| 词汇 | pendulum |
| 释义 | pendulum noun uk /ˈpen.dʒəl.əm/ us /ˈpen.dʒəl.əm/ [ C ] a device consisting of a weight on a stick or thread that moves from one side to the other, especially one that forms a part of some types of clocks: 摆，摆锤;（尤指）钟摆 The pendulum in the grandfather clock swung back and forth.落地钟的钟摆来回摆动。 The spaceship's jets were fired periodically to dampen a side-to-side pendulum motion that had developed.宇宙飞船的喷射装置周期性地喷射，以减缓飞船出现的左右摇摆现象。 TATSUHIKO SAWADA/amana images/GettyImages [ S ] a change, especially from one opinion to an opposite one: 摇摆不定的事态（或局面）;（尤指）观点的摇摆不定 As so often in education, the pendulum has swung back to the other extreme and testing is popular again.人们的观点又回到了另一个极端，考试又流行起来了，这种摇摆不定的现象在教育领域经常出现。 Watches & clocks 24-hour clock against the clockidiom alarm alarm clock at/on the stroke of somethingidiom atomic clock clock horology hour hand hourglass lose military time minute hand movement stroke timepiece turn the clocks backphrase twenty-four-hour clock unsynchronized watchband You can also find related words, phrases, and synonyms in the topics: Changing your mind pendulum | American Dictionarypendulum noun[ C ] us/ˈpen·dʒə·ləm/ a device consisting of a weight hanging on a rod or cord that moves from one side to the other, esp. one that forms a part of a clock A pendulum is also power or control of an activity that changes from one group to another: In labor-management relations, the pendulum has swung wildly in the direction of the players. Examples of pendulumpendulum Despite some unavoidable differences between the theoretical and actual pendulums, the phenomena exhibited by them show good correspondence. When the lengths are equal, the energy in each mode is equally partitioned between the two pendulums. The work consists of six huge pendulums which are activated by the up and down movement of their hanging mounts. Without knowing more about the particulars -for instance, about engineers'concepts of pendulums - one cannot dare to give a definitive answer in this case. The other pendulums have different natural frequencies, so the driver has little effect. Again, pendulums were fitted with colourful sails and set in motion by an oscillating fan which ran continuously. Since the behaviour of the pendulums depends on the oscillating frequency of their mounts, a vari-speed electric motor is used. The first affects our considerations insofar as we will calculate accumulated phase differences for pendulums of substantially different amplitudes. Releasing the pendulums in opposite directions results in a counterswinging motion, while the system as a whole oscillates around the vertical axis (the cord). Our legs swing like pendulums, with adjustments so that we don't trip. Without knowing more about the particulars - for instance, about engineers'concepts of pendulums - one cannot dare to give a definitive answer in this case. All the pendulums are coupled together by the suspension. As the driver swings, it moves the suspension, which in turn moves the other pendulums. Here 0 is the damping, 0 is the characteristic frequency of the pendulum ! Figure 4 shows that it takes approximately 8 seconds for the pendulum's angle to become steady, and even longer for the cart's position to stabilize. See all examples of pendulum These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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