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1. | a diffraction grating consisting of a pile of plates of equal thickness arranged stepwise with a constant |
| 由许多等厚度的金属盘组成的由梯状排列进行不断弥补的衍射光栅。 |
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2. | The accelerometer bias errors result in an average constant offset plus an oscillatory component. |
| 加速度计的偏置误差形成一平均的常值偏离加上一振荡分量。 |
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