光学、声学 光学 umbra 本影 umbra 本影†，阴影[区]
umbra 本影
计算机应用 计算机辅助设计与图形学 释文 umbra 本影区
- negative orthant
- negative parallax
- negative part
- negative particular proposition
- negative part of a function
- negative part of an element
- negative peak
- negative pedal curve
- negative perfect correlation
- negative permeability materials
- negative permittivity materials
- negative phototropism
- negative plate
- negative platemaking
- negative Poisson's ratio material
- negative polarity items
- negative polarity machining
- negative polynomial distribution
- negative-positive photographic system
- negative pressure
- negative pressure injection
- negative pressure method for deposit
- negative-pressure pulverizer with intermediate storage bunker
- negative pressure region
- negative pressure suction appliance