单词	hydrographic sonar
释义	hydrographic sonar 水文地理声纳
随便看	backward tilt backward tilting trough backward-tilting trough backward-titling trough backward torque backward tracing backward tracking backward trajectory backward transfer backward transfer admittance backward transfer character backward transfer characteristic backward transfer character istic backward transfer characteristics backward-transfer signal backward transter character backward travel backward traveling wave backward travelling wave backward-travelling wave tube backward tree backward type backward underswing on horizontal bar backward uniqueness backward unlinkability