backward precession逆旋进;反进动
planetary precession[天] 行星岁差;行星岁差
annual precession[天] 年岁差;岁差;[天] 周年岁差
precession frequency进动频率;旋进频率
Forward Precession正进动
spin precession自旋进动;自旋轴进动;自由陀螺仪的进动性
perihelion precession近日点进动
real precession[水运] 真实进动
Basing on this discovery,a novel double-sensor vortex precession meter (DSVPM),aimed to improve measuring accuracy,was developed.
这一研究结果,为新型差动式传感器旋涡进动流量计的研制提供了理论依据。
The subsequent chapter described the method of amendment for the algorithm on the basis of previous chapter, including the precession, nutation, atmospheric refraction, and other amendments to improve the accuracy to the level of arc seconds.
第三章阐述了在上一章的基础上对中间步骤和最终结果进行修正的计算方法,包括对岁差、章动、大气折射等的修正,从而提高计算精度到弧秒的级别。
参考来源 - 基于嵌入式系统的高精度自动寻星系统设计Chapter 4 analyses the precession angular estimation algorithm and reduces the estimation parameters and the operating time according to the periodicity of target’s RCS data.
第四章主要研究弹道中段目标的进动角估计方法。
参考来源 - 基于窄带信息的弹道中段目标运动特性反演和成像方法研究N（名词） the act of preceding 进动