The result of positioning precision test shows that the positioning precision of the GPS real time differential system based on GPRS has attained cm-level.
实际测试结果表明：基于GPRS的GPS实时差分系统达到了厘米级定位精度。
In this paper, the principle of transit-time differential method of ultrasonic flow measurement is introduced along with the discussion of its advantages and disadvantages.
本文讨论了时差法成品油超声波流量计的基本原理、优缺点等。
Based on measured data of micro silicon gyro and time-series theory, the AR model of gyro static drift is established, then the continuous-time differential equation is got.
利用微硅陀螺测量的数据，运用过程辨识理论和时间序列分析方法，建立了陀螺静态漂移的自回归（AR）模型，进而得到连续微分方程。
At the same time, differential rotation driven through the planetary gear differential to achieve differential.
同时带动差速器旋转，并通过差速器的行星齿轮实现差速。
At the same time, differential rotation driven through the planetary gear differential to achieve differential.
同时带动差速器旋转，并通过差速器的行星齿轮实现差速。
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