作者: Harrell E. Dorey , Mark K. Dorey
DOI:
关键词: Acoustics 、 ALARM 、 Structural engineering 、 Position (vector) 、 Engineering
摘要: A unitary flexible housing includes a top wall, having first and second contact plates mounted within alarm cavity positioned between the wall bottom wherein control is arranged to effect actuation of an audible upon directed in communication relative one another vehicle directing together. visual optionally employed. The including projecting nodes for effecting non-skid surface.