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次声的
gen. subacoustic
otorhinol. subsonic
phys. infra-audible
space infrasonic
tech. undersonic
telecom. infra-acoustic
次声
gen. subaudible
oil subaudio; infrasound; infrasonic
次声[频]的
agric. subaudible (subaudibilis)
次声的频率低于16赫/秒
gen. subsonic
次声 的: 11 phrases in 5 subjects
Explosives and Explosive Ordnance Disposal1
General2
Geophysics1
Sports1
Technology6