峰顶平直度的英文

• peak (top) flatness
• peak flatness
• peak transmittance

• 度:    surmise; estimate
• 平直度:    alignment; degree of straightess; flatness; planeness; straightness
• 峰顶平面:    summit plane
• 峰顶平齐:    summit concordance
• 峰顶平台:    platform of humcrest