关于leveling的百科

• trigonometric leveling造句怎么写

• trigonometriclevelingThetraditionalmethodsaregeometricallevelingandtrigonometricleveling.Theyhavedifferentadvantageanddisadvantage.Elevationdifferencebytrigonometriclevelingshallbecorrectedbysphericalaberration.Applyingthemeasuringprincipleofthetrigo...
• 2018-03-2826548