正字法；表音法；正交射影；正射投影的英文

orthography

• 正字法:    orthography
• 表:    outside; surface; ...
• 音:    sound
• 法:    law
• 正交:    orthogonal; perpen ...
• 射影:    projection
• 正:    the first month of ...
• 射:    shoot; fire
• 投影:    projection; projec ...