其中以跑 道的起点作为坐标原点，定义当地地理坐标系为东北天（ENu）坐标系。APL在该 坐标系中的位置可定义为（R，旺，13），其中R为APL到坐标原点的距离，c【为 APL在坐标系中的方位角，D为在坐标系...
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通过方位精对准状态在北西天坐标系和东北天坐标系两次定位测量水平陀螺漂移，在水平精对准状态下记录北向速度并采用最小二乘法解算方位陀螺漂移。
Horizontal gyro drift is measured in state of azimuthal alignment by the two localization laws of the three directions of north, west and up, as well as east, north and up.
巴西东北部和墨西哥等集约化养殖地区的最佳生长期可能会降至120天以下，这对玉米等作物的成熟至关重要。
Intensively farmed areas like northeast Brazil and Mexico are likely to see their prime growing seasons fall below 120 days, which is critical for crops such as corn to mature.
据报道，这名来自中国东北的年轻人每天工作12个小时，一天换三次防护服。
The young man, reportedly from northeast China, had to work 12 hours every day, changing his protective suit three times a day.
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