相关知识点: 试题来源: 解析 在波的上下文中,位移是指介质中的粒子从其平衡位置移动的距离。 在波的传播过程中,介质中的粒子会围绕其平衡位置振动。位移指的是粒子在某一时刻偏离其平衡位置的距离,可以是正值或负值,取决于粒子相对于平衡位置的位置。反馈 收藏 ...
mean 意味着，意思是 be meant 这里是个被动语态，一般会出现在问题中 : by 后可接名词性结构What do you mean by ...是你不明白对方为何要做某事或为何这样说,询问意思或意图的句型,比如说 what do you mean by beauty?望采纳 谢谢 ...
这里meant 是mean 的被动语态。例(1)：主动语态： “Forthrightness” means what?被动语态： What is meant by “forthrightness”?例(2)：主动语态： Rita writes a letter.被动语态： A letter is written by Rita.例(3)：主动语态： 一辆车撞死了行人 被动语态： 行人被一辆车撞死...
4 (a) State what is meant by the term polarisation when applied to a wave.[1](b)Explain why only transverse waves can be polarised.[2](c)Some films released have enabled viewing in three dimensions (3D). This can be done using two superimposed polarised images on the screen. One of ...
In order to understand, however imperfectly, what is meant by "face", we must take (1) of the fact that, as a race, the Chinese have a strongly (2) instinct. The theatre may almost be said to be the only national amusement, and the Chinese have for theatricals a...
The amplitude is a maximum at the frequency calculated in (b).(i) State the name o f the effect giving rise to this maximum...[1](ii) At any given frequency, the amplitude o f oscillation o f the trolley is constant.Explain how this indicates that there are resistive forces opposin...
aIt is necessary to define what is meant by diagnosis or troubleshooting because the termsare used differently in the literature. Sometimes diagnosis refers only to the process from identification of the symptom to the determinationof the fault. In other cases, especially when one speaks about troub...
(b) Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency. Video Solution| ShareSave Answer Step by step video & image solution for (a) What is meant by the 'loudness' of sound? On what factor does the loudness of a sound depend? (b) Dra...
What is meant by he doesnt swing bpndly( Line 4, Paragraph 3 )A.Ken Smith provides sufficient examples for his criticism.B.Ken Smith hits junk Engpsh in the right point.C.Ken Smith acknowledges some positive side to junk Engpsh.D.Ken Smith bravely defend
What is meant by ''Awaiting AE evaluation''? I submitted a paper to the journal. Initially, the status was ''Awaiting Reviewer Scores'', then changed to ''Awaiting AE Recommendation'', and now it is ''Awaiting AE evaluation''.