p型-本征型-n型半导体(PIN)
PIN(positive-intrisic-negative
半圆型沉箱导堤
semi-circular caisson training jetty
半圆型开孔防波堤
semi - circular perforated breakwater
半圆型潜堤
submerged semi-circular breakwater
半圆型随行波
semicircular traveling wave
大型半圆体
large semi-circular block
500t半圆体
500 t semi-circular cylinder
Ehresmann型rpp半群
Ehresmann type rpp semigroup