查询词典 acceleration of gravity

Then, the orbit of the Moon about the earth could be a consequence of the gravitiational force, because the acceleration due to gravity could change the velocity of the Moon in just such a way that it followed an orbit around the earth.

如此说来，月球的轨道应该是地球引力的结果。因为引力产生的加速度会改变月球的速度，使它按一个绕地轨道运转。

The applied net force is the weight of the hanger and masses (m x acceleration due to gravity) minus friction forces.

施加的净力就是吊架和物块的重量与摩擦力之和。

The component of the acceleration due to gravity which is parallel to the inclined surface is gsin 續 where 續 is the angle of the incline.

重力加速度平行于斜面的部分等于 gsin θ，这里的θ是斜面的倾角。

On moving base, a new initial alignment algorithm for strapdown inertial navigation system is proposed. In the algorithm, two special inertial frames, the initial-time inertial frame (i0 frame) and the initial-time SINS body inertial frame (ib0 frame), are defined and are selected as calculation reference frames, then, the calculation of initial alignment direction cosine matrix is expanded into three parts:(1) the DCM between i0 frame and the navigation frame will be easily obtained via local geographical coordinates and initial alignment time;(2) attitude updating using gyro samples gets the DCM between SINS frame and ib0 frame;(3) by explaining SINS specific force equation in SINS body frame, the relation between velocity log, accelerometer measurement and gravity acceleration is established to achieve the constant DCM from ib0 frame to i0 frame.

在运载体运动情况下，提出了一种适用于捷联惯导系初始对准的新算法，该算法以惯性空间为参考基准，即建立了初始时刻惯性坐标系（i0系）和初始时刻捷联惯组惯性坐标系（ib0系）两个惯性坐标系，将初始对准姿态矩阵的实现分解为三部分：（1）通过地理位置和初始对准时间求解i0系至导航坐标系的变换矩阵；（2）使用姿态更新算法实时计算捷联惯组相对于ib0系的变换矩阵；（3）通过惯导比力方程变形，获得测速仪辅助测量、加速度计输出和重力加速度之间的关系，从中可以求解出从ib0系至i0系的常值变换矩阵。

In this paper, the principle of the accelerometer-based gravity gradiometer is presented and its measurements formulas are derived using the basic equation of acceleration in a rotating body.

然后以美国Bell/Aero公司生产的重力梯度仪为例，导出旋转加速度计式重力梯度仪测量结果。

The explanation is that the 'gravitational field' created by acceleration is added to, or subtracted from, the gravity of the Earth.

这个问题的解释就是由加速而需在地球引力场的基础上增加或者减少的"重力场"。

Afterwards, we propose a new constant coefficients measurement method in dynamic equation of robot manipulators, this measurement method includes three groups of experiments: group one, let each joint of robot manipulator keep static to measure the constant coefficients in gravity term of dynamic equation and Coulomb frictional torque, group two: let only one joint of robot manipulator move at a constant velocity to measure the viscous frictional coefficient and constant coefficients in effective inertia of dynamic equation, group three: let only one joint of robot manipulator move at constant acceleration at a time to measure constant coefficients in Coriolis and centrifugal term and coupling inertia of dynamic equation.

让操作器单个关节恒速运动，在对驱动系统中传动机构，减速装置和电感系数综合考虑的基础上，这组实验对粘滞摩擦系数及有效惯量中常数系数进行测量。这种测量方法只要求旋转关节的驱动电机施加恒定电压，回转关节驱动电机施加正弦波电压。3。让操作器单个关节恒加速运动，这组实验测量动力学方程中哥氏力、离心力项和耦合惯量项中的常数系数，这种测量方法只要求单个关节匀加速运动，而其它各关节保持静止，这种测量方法虽然要求关节匀加速运动，但不必进行关节角加速度检测，而只需进行关节角位移和角速度检测即可，输入量直接给定为输入电压。

On the basis of a previous work which has proved that the inertial mass can produce gravity, and the magnitude of which is inversely proportional to the square of the distance of the two bodies, it is discussed that whether bodies with different densities fall with the same acceleration.

在理论上证明惯性质量会产生万有引力，并在万有引力与距离平方成反比的基础上，讨论了不同质量密度的物体在引力场中自由下落加速度的问题。

An anomalous gravity acceleration difference variance of (1～2×10〓g) was observed with preliminary 10m-droppinglength experiments, but it is independent upon the rotation sense of the test mass.

近10m长距离自由下落初步实验表明在两检验质量自由下落过程中，出现了有规律的重力加速度差异常变化现象。

We spread the feeling machine to study the simple pendulum vibration period with a 霍 of switch 尔, perfect the diagraph of the gravity acceleration;We will gather a 霍 of switch 尔 spreads the feeling machine to used for measuring the spring coil to flap the son makes JIAN3 XIE2 vibration of period, further tested to find out inertial quantity of the object;New gather a 霍 of switch 尔 spreads the feeling machine to provided a kind of precision to measure the 磁 damping coefficient and new method of the glide coefficient of friction of the materials that the magnetism slips the piece for us;Gather a 霍 of switch 尔 spreads the feeling machine and can also used for the verification machine can guard the 恒 laws etc.

我们传布了感觉机器用开关尔的霍学习简单的钟摆震动时期，使地心引力加速的分度尺完美；我们将会聚集开关尔的霍传布感觉机器到为测量要拍打儿子的卷作时期的 JIAN3 XIE2 震动的春天用，更进一步测试发现物体的不活泼的量；新的聚集开关尔的霍传布感觉以机器制造提供一种精密测量磁湿气磁性滑倒块的材料摩擦的滑动系数的系数和新的方法因为我们；聚集开关尔的霍传布感觉机器和罐子也用因为确认机器能及其他保卫恒法律。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了