| 释义 |
PPI
I. \|pē(ˌ)pē|ī\ noun
(-s)
Etymology: plan position indicator
: a radarscope on which spots of light representing reflections of radar waves indicate the range and bearing of objects such as airplanes, ships, buildings, cliffs, and mountains
II. abbreviation
Usage: often not capitalized
1. parcel post insured
2. policy proof of interest |