Meanings

average power

directional light source

averaging

mean time to repair

balanced error

Pacific Time (US time zone)

equity

in plain words

pacifist constitution (i.e. the current Japanese constitution)

to eat up (in no time)

pride goes before a fall

complacency about peace

planar antenna

peace declaration

stacking flat and face up (magazines, books, etc.)

orthogonalized plane wave

Nikkei Stock Average

Oriental false hawksbeard (Youngia japonica)

mean deviation

mean sun