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词汇
Echo
释义
Echo
回波,回音
一种波动现象,当一个原始的振动波发生後,其波动即向四面扩散,碰到有障碍物即被反射同来,产生回波或回音,同被传播时慢慢的被衰减,故其波幅均较原始波小,而其时间相位也较原始波动延缓。
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set price on
set price upon
set right
set sail
set sb.'s back up
setscrew
set shot
set square
setsquare
set sth.in motion
set store by
SET symbol
sett
settee
setter
setter-on
set the fashion
set theory
set the pace
set the scene for
set the seal on
set the stage for
set the table
setting
settle
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更新时间:2026/3/9 17:18:15