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echo box

avia. 回波谐振器; 回波谐振盒
el. 回波谐共振箱; 回波〔空箱〕谐振器
mil., air.def. 回波测试装置
space ★ 回波箱
tech. 回波谐振腔; 回波共振腔
echo-box
gen. 回波谐振腔; 空腔谐振器
echo- box
: 10 phrases in 5 subjects
Air defense2
Aviation2
General1
Nautical1
Technology4

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