查询词典 angular derivative

With the obtained model of the power spectrum, we have theoretically analyzed the contribution of all the amplitude noise, timing jitter and pulse width jitter to the total noise power spectrum. The simulated results show that while the product of pulse width and angular frequency is larger than 1, the pulse width jitter will contribute an amount of noise to the total noise power.

利用得到的模型，理论分析了激光输出光脉冲各个噪声项对总噪声功率谱的贡献情况，并数值模拟了输出脉冲功率谱，结果表明在脉冲宽度角频率积大于1的情况下，脉冲宽度抖动对总噪声功率谱有很大的贡献。

Stepper motor is the electrical impulse signals into angular displacement or linear displacement of the open-loop control components.

摘 要：步进电机是将电脉冲信号转变为角位移或线位移的开环控制元件[1]。

Historically Abbe described microscope eyepieces using a different decomposition in terms of angular magnification of the eyepiece and 'initial magnification' of the objective.

虽然被接受的标准距离是250mm，但现在的显微镜会设计成只有160mm的焦距，使得仪器变得非常的紧凑。

Some main system parameters were analyzed on their influence for the evaluation methods, indicating that the optimal angular magnification described by the two evaluation methods were consistent with the actual systems, and that the evaluation method based on MRTD channel width has a better agreement with actual viewing which is thus more suitable for evaluating thermal imaging systems.

两种方法描述的系统最佳放大率与实际情况一致，且基于MRTD信道宽度的热成像系统性能评价方法与实际观察具有更好的一致性，适合热成像系统综合性能的评价。

Proceedings from the theory of geometric optics,the condition adaxial noncoherent imaging of Fizeau opticalsynthetic aperture imaging system is derived to achieve diffracion limited performance over a finite field of view,and the conclusion is that the angular magnification of the individual telescope must be equal to the linear demagnification factor.

从几何光学理论出发，详细推导了斐索型光学合成孔径成像系统的近轴非相干成像条件，即子望远系统的角放大率等于系统的线性缩放因子。对于焦平面上的像点而言，合成孔径成像系统可等效为一个带有特殊形状孔径光阑的望远系统，这要求该孔径光栏的开口形状和位置分布与合成孔径成像系统各子系统孔径大小和位置分布相一致。

Objective: To measure linear and angular parameters of the posterior structure of the lower cervical spine.

目的：测量国人下颈椎后结构的相关径线及角度，为颈椎后路内固定手术的设计及施行提供参考数据。

They measure the angular velocity of each axis.

我们需要3 个传感器用于稳定全部3 个轴。

The ring laser gyro based on the Sagnac effect is an inertial instrument, which can measure angular rotation.

激光陀螺是一种基于塞纳克效应的惯性仪表，可用来感知外界惯性系统的角速度。

LASER GYRO, A gyro which uses two laser light beams to measure angular rotation.

激光陀螺仪，一种由两条激光光束来测量旋转角速度的陀螺仪。

The ring laser gyro uses laser light to measure angular rotation.

该环形激光陀螺利用雷射光来衡量角旋转。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。