Earth's rotation rate is still slowing down — our days are getting longer and longer.
地球的旋转速度仍在减慢——我们一天的时间正越变越长。
The above argument is strongly reinforced by the observed rotation rate of stars.
观点已为观测到的恒星自转速率有力地证实。
Right now, the Moon's rotation rate, and the time it takes to orbit Earth are the same.
现在，月球的自转速度与绕地球公转速度是一样的。
And so we can use the spin rate, the rotation rate of a star, as a clock to measure its age.
因此，我们可以用星星的自转速度及速率作为衡量它们年龄的计时器。
Basic principles and the method of double-closed-loop PID control of rotation rate are discussed.
论述了转速双闭环控制的基本原理及方法。
Quasars are so far away that they constitute the best frame of reference for measuring Earth's rotation rate.
到目前为止，类星体是测量地球自转最好的参照系。
The rotation of the Earth includes precession, nutation, variations of the rotation rate and polar motion.
地球自转运动包括岁差和章动，极移和日长的变化。
Furthermore, reducing the tool size and increasing the rotation rate resulted in a significant improvement...
此外，减小加工工具尺寸并提高旋转速度也可明显提高搅拌区显微观组织的均匀性。
Fastened by cement, the agitation effection can be controlled by adjustment the rotation rate of agitation axis.
水泥土的加固，可用调节搅拌轴回转速度来控制搅拌效果。
The fundamental step to acquire the rotation rate of fiber optic gyro (FOG) is to detect the differential optic phase.
对光纤陀螺中光相位差的检测是得到所需角速度的基础。
The 11-hour intervals approximated but didn't match Saturn's rotation rate, so the planet's magnetic field couldn't be the source.
11个小时的间隔接近土星的转动速度，但是并不正好匹配，因此土星的磁场不是信号源。
That went off without a hitch, increasing the craft's rotation rate from 19.16 revolutions a minute to its original value of 19.76.
这还算顺利，并且提高了飞船的自转速率，从现在的一分钟旋转19.16增加到了原来的19.76。
The paper discusses the effect of rotation rate on property parameters such as flow volume, delivery lift, power and cavitation etc.
论述了离心泵转速提高对流量、扬程、功率、汽蚀余量等参数的影响。
The researchers calculated how this would affect the rotation rate of the whole planet, which would compensate to conserve angular momentum.
研究人员计算出这会怎样影响整个地球自转速度，这有助于保持角动量守恒。
It was a bit of a surprise, given that most solar observations show a pattern of about 28 days - the rotation rate of the surface of the sun.
这令人感到小小的惊讶，因为大多数太阳观测显示出一个以28天为周期的模式——这正是太阳表面的旋转周期。
Furthermore, a new index is defined to discuss relative seasonal change of wind at different rotation rates compared to the Earth rotation rate.
此外，定义一个新的表征季节变化相对大小的指数来探讨不同自转周期下，风场季节变化相对于地球自转周期条件下的强度的相对大小。
The digital control and signal processing for hydrodynamic modulation voltammetry is proposed. The rotation rate control signal was software generated.
本文报道了流体力学调制伏安法的数字控制和信号处理。
The deciding factors for whether a core collapse produces a GRB appear to be the mass and rotation rate of the progenitor star at the time of its death.
核心坍塌是否能产生GRB的关键因素，似乎在于原来恒星临终时的质量与转动速率。
This paper researches the variation of the Momentum Wheel(MW) rotation rate which is applied to attitude control in three-axis stabilized GEO satellites.
对三轴稳定地球同步卫星中用于姿态控制的偏置动量轮转速变化问题进行研究。
Since Earth’s rotation rate varies, so would the value of one second when it’s defined as a fraction of the time it takes for one spin of the Earth on its axis.
由于地球自转速率发生偏离，因此当把地球绕中轴旋转一圈作为一个单位时，（这种偏离）就相当于一秒钟时间。
A new method of measuring the rotation rate of cartridges is established to improve the precision of measurement of cartridge rotation rate by a long way.
提出新的弹丸转速测量方法，大幅度提高弹丸转速测量精度，并通过实例测量验证其能满足测试要求。
Further analyses show the variation of earth rotation rate and sunspot cycle length have important role on the climate abrupt change in the Qinghai-Xizang Plateau.
进一步分析表明，地球自转速度和太阳黑子周期长度的变化对高原及北半球本世纪气候的突变和阶段性变化起着重要的作用。
The paper presents the way of testing the performance parameters, such as pressure, torque moment, rotation rate and air displacement in dynamic state by microcomputer.
本文介绍利用微机对压缩机性能多数压力、转矩、转速、排气量等进行实际动态测量的方法。
It is concluded the ball mill power can be determined in accordance with its size, ball filling ratio and rotation rate, and the method is proven to be feasible in practice.
由此得出，设计大型磨机时，可根据其规格及填充率、转速率确定功耗计算的方法，通过运行实践证明，此方法是可行的。
By researching the rotation rate of the earth, the escape of hydrogen and the landscape of the earth in the geological period, the paper supports the Expansion Theory further.
本文通过对地史时期中地球自转速率、氢的外逸以及地表景观的研究，进一步支持了地球膨胀说。
It brings up the disciplinarian of sun radiation pressure affecting the variation of the MW rotation rate with analyzing actual data of MW, and designs a model to validate it.
通过分析动量轮转速实际测量数据，得出太阳辐射压力影响转速变化的规律，并利用理论分析进行验证。
The flow rate, electromechanical rotation rate and split ratio are the main operational parameters which can affect the separation characteristics of the compound hydrocyclone.
流量、电动机转速及分流比是影响复合式水力旋流器分离特性的主要操作参数。
Based on the theory and method introduced before, this paper applied the rotation models to compute the sample rotation rate of sampling survey on vacancy rate of households in Shanghai.
包括分层抽样下样本轮换的估计量公式和最优样本轮换率的确定方法。再接着利用前面介绍的理论知识，结合上海市城镇住房空置率抽样调查数据进行实证分析。
Based on the theory and method introduced before, this paper applied the rotation models to compute the sample rotation rate of sampling survey on vacancy rate of households in Shanghai.
包括分层抽样下样本轮换的估计量公式和最优样本轮换率的确定方法。再接着利用前面介绍的理论知识，结合上海市城镇住房空置率抽样调查数据进行实证分析。
应用推荐