正投影

orthogonal projection

first month of the lunar year

straight / upright / proper / main / principal / to correct / to rectify / exactly / just (at that time) / right (in that place) / (math.) positive

to cast / to send / to throw oneself (into the river etc) / to seek refuge / to place oneself into the hands of

picture / image / film / movie / photograph / reflection / shadow / trace

to project / a projection