精确度

Finally, the analysis results of assembly interference and assembly clearance show that the numerical models established have high degree of precision. That can be used as a reference for the profile of cutter and the virtual design of double-roller enveloping hourglass worm reducer.

最后的装配干涉和装配间隙分析结果表明，建立的数字化模型精确度很高，可以为加工蜗杆时刀具廓形的设计，无侧隙双滚子包络环面蜗杆减速器的虚拟设计等后续工作提供参考依据。

We show that this impossibility result can be overcome in laboratory settings by combining technologies for obtaining neural measures of value (functional magnetic resonance imaging–based pattern classification) with carefully designed institutions that allocate costs based on both reported and neurally measured values.

他们说，fMRI 可以用55%的精确度来破解个人的偏好，这一数字仅比或然率稍好一点，但却仍然足以使人们获取必要的价值。

Parts taper machining error analysis and compensation for wire cut machine tools;2. Process points analysis for die and mould in wire cut machining;3. Using MasterCAM and UG as the tools, the second method is carried through 3D modeling, 4 Axis NC programming and NC 2nd wire cut of worm wheel involute gear.

针对常规数控加工方法加工精密小模数蜗轮模具型腔，加工精确度低，齿形变形大，传动准确度低的问题，探讨了用Mastercam、UG软件进行蜗轮三维造型、四轴数控编程、数控线切割加工蜗轮模具型腔的工艺方法，给出了解决精密小模数齿轮模具加工新工艺，在工程上具有推广价值。

The pitch refinement algorithm improves the resolution of the pitch from one half sample to one quarter sample around the pitch estimated by HPEM.

基音修正是在HPEM的基础上进一步提高基音估计的精确度，其目的是提高高频谱的拟合程度。

In order to analyze the characteristics of multi-position pumped fiber laser expediently, the predominant part of the re-emission was adopted to improve the solutions precise, and the rate equations describing the Yb-doped multi-position pumped fiber lasers were solved analytically.

为了方便地对多点抽运光纤激光器的特性进行分析，采用保留上能级粒子再发射项主体部分的方法以提高精确度，解析求解了多点抽运掺镱光纤激光器的稳态二能级速率方程组，得到了光纤激光器的输出功率的近似解析解。

In order to obtain more exact analytical solution to study the output characteristics of double-clad fiber lasers,according to the continuous-wave rate equations of fiber lasers,using typical parameters of double-clad fiber lasers,the contribution of the re-emission effect arising from the interaction between the upper-level atoms and pump light was estimated.Taking into account the predominant part of the re-emission to improve the accuracy of the integration approximated rate equations,the integration of the product of the loss and radiation should be found and explicit analytical expressions for the output of the DCFLs and gradient efficiency of the pump radiation,were deduced,and certain issues of concern were discussed.

为了求得用于研究双包层光纤激光器输出特性的更为精确的解析解，根据稳态速率方程组，针对典型的双包层光纤激光器参量，在估计了上能级粒子再发射项和抽运光产生的影响后，采用保留再发射贡献主导部分的办法以提高可积分近似方程的精确度，明确地提出了要获得光纤激光器输出功率的解析表达式的关键在于求出损耗系数与光场乘积的积分值，简洁地求得了输出功率和抽运光斜线效率的显函数解析表达式，并对其相关问题进行了讨论，以915nm，920nm和975nm的抽运光为例，当输出激光为1090nm时，得出975nm抽运光产生的斜率效率最高并可高达约87%。

Numerical tests based on this method in three dimensional media show that this algorithm is fast, well-posed and high efficient.

并通过模型计算证明了本方法的稳健性以及计算的高精确度和高效率。

Simulation results show that the method solves dynamical product of HRTF data based on moving sound sources and the smooth transition of the fore-and-aft sound sequence signals. The method is more reliable and accurate than other methods, and realizes indoor acoustic simulation based on dynamic mechanism.

仿真结果表明，该方法较好地解决了运动声源HRTF数据的动态产生和前后声信号段平滑过渡问题，具有更好的真实性和精确度，实现了基于动态机制的室内声学仿真方法。

Simulation results show that the method solves dynamical product of HRTF data based on moving sound sources and the smooth transition of the fore-and-aft sound sequence signals.

仿真结果表明，该方法较好地解决了运动声源HRTF数据的动态产生和前后声信号段平滑过渡问题，具有更好的真实性和精确度，实现了基于动态机制的室内声学仿真方法。

Finally, based on the theory of Timoshenko beam, a beam model of this crankshaft is built, which is compared with solid model. The results indicate that this beam model can meet the needs of calculation precision and calculation efficiency. With this beam model, the condition in which real loads are put on the crankshaft is simulated. The displacement curves、velocity curves、acceleration curves of the main journals and the pulley of this crankshaft and torsion vibration curve of the pulley are then gained. With these curves, the dynamic characteristic of the crankshaft is analyzed. The conclusion indicates that this crankshaft has good dynamic characteristic.

最后利用Timoshenko梁理论建立了曲轴的梁单元模型，将此梁单元模型与体单元模型进行了比较，结果表明梁单元模型能够满足精确度和计算效率的要求；利用该梁单元模型，模拟了实际条件下的载荷作用时曲轴的响应，得到了曲轴各主轴颈和皮带轮端的位移、速度、加速度曲线以及皮带轮端的扭转振动曲线，分析了曲轴的动态特性，结论表明该型曲轴具有良好的动态特性。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。