单词	fixed ring
释义	fixed ring 固定圈
随便看	single frequency outlet single frequency polarized light single-frequency polarized light single-frequency precise point positioning single frequency propagation regime single frequency receiver single-frequency recording single frequency signal single-frequency signal single frequency signal generator single-frequency signal generator single frequency signaling single-frequency signaling single frequency signaling unit single-frequency signal injected method single-frequency signalling single frequency simplex single-frequency simplex single-frequency sine-wave response single-frequency sound single frequency tone single-frequency translation single-frequency two phase rectification single-frequency ultrasound single-frequency vibration