谐声系统中，晓母的谐声关系十分复杂。
In Old Chinese Phonetic system, xiaomu series are very complicated.
概括性地介绍了汉字谐声系统的历史层次。
The historical hierarchy about the system of the Chinese partial tone has been synoptically introduced.
并利用可调谐声子晶体实现了可调谐负折射成像。
Based on the controllable refractions, moreover, the acoustic tunable superlensing effect has been observed.
当我们让干扰注意力的不和谐声音沉默下来，我们就能听得更清晰。
And we hear best when we silence the cacophony of competing voices clamoring for attention.
“青山遮不住，毕竟东流去”，相信那些社会中的不和谐声音不过是暂短的噪音。
Just as the high mounts can never prevent the river water from flowing, discordant sounds in our society are believed not to last long, and disappear very soon.
因为在预选赛使用了70多名球员，队伍中的不和谐声音更加重了这种嘈杂混乱和战术不明朗的情况。
With 70 players having been used in qualifying the general air of chaos and tactical anarchy is only heightened by talk of divisions in the camp.
分析表明，当由简谐声源所发射的声波在一维非稳定流中传播时，对于某一确定位置，其声压幅度除随时间周期变化外，还受到M和（?）
When a harmonic wave propagates in one-dimensional unsteady flow, the wave amplitude at any x-position will be related with Mach number M and (?)
分析表明，当由简谐声源所发射的声波在一维非稳定流中传播时，对于某一确定位置，其声压幅度除随时间周期变化外，还受到M和（?）
When a harmonic wave propagates in one-dimensional unsteady flow, the wave amplitude at any x-position will be related with Mach number M and (?)
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