近似方法

The approximate calculating method is proposed for the low loss and thin flake material perturbation outside of the cavity. The measured complex permittivities of teflon,polyvinyl chloride ,pure ceramic flake are in good agreements with the standard data.

在隙缝辐射较小的条件下，提出适于损耗小，厚度薄(1mm左右)的片状材料腔外微扰的近似计算方法，测得聚四氟乙烯、聚氯乙烯、纯陶瓷片等复介电常数与准确值相当吻合的结果。

In fact, because of using some methods of predigesting or approximating and complexity of heat changing process etc. when design to form new-type heat exchanger, we must determine the actual heat transfer performance, also to the old heat exchanger.

实际上由于设计过程中采用某些简化或近似的方法，并且换热器换热过程的复杂性等因素，对于设计制造而形成的新型换热器必须测定其实际的传热性能，对于使用过的旧的换热器也需如此。

Then 4 approaches are used for solving semiconductor thermoelectric problems are proponed:(1) solve basic semiconductor equations directly,(2) solve heat transfer equation with the fitting expressions of thermoelectric transport,(3) approximation of relaxation interval time,(4) characteristic temperature of thermoelectric-pile method.

随后，提出了求解半导体热电问题的4种方法：①直接求解半导体方程组②驰豫时间近似法③利用温差电输运系数的拟合式来求解导热方程④热电堆特征温度法。

The calculations are based on the transfer-matrix method and a truncating approximation.

采用了转移矩阵方法和截断近似技术。

After several reductions of absorptions of capacitances and transconductances tunned can enter the very precise range with the error rate very low for the simulation resonance frequency.Finally, The above thesis was verified by TSMC 0.35u H-Spice simulation and improve the non-ideal effect for filter circuit with OTA-C at a high-frequency.

主要方法为计算出寄生电容值大小，来适当调整外加电容值，当调整至外加电容值近似於寄生电容值时，此时将外加电容移除，并搭配OTA转导值的调整，可让此电路在高频无外加电容时有更精准的输出。

To determine the role of vagi in heart rate variability, conscious rabbits were employed and electrocardiogram was recorded under conditions of bilateral vagi intact, unilateral vagotomy, and bilateral vagotomy.

采用功率谱和近似熵(approximateentropy ，ApEn)的方法，分析清醒家兔在双侧迷走神经保留，右、左侧迷走神经切断以及双侧迷走神经同时切断时心搏间期的变化。

An approximate worm wheel hobbing method is derived from the study of the engagement, module and pressure angle of worm and straight gear in the case of no worm wheel hob and then an adjustment method is determined for correct engagement between worm wheel and worm with standard cutting hob, which is more valuable in practice.

在没有涡轮滚刀的情况下，通过研究涡轮蜗杆与圆柱齿轮的啮合条件，以及涡轮蜗杆与圆柱齿轮间模数、压力角的关系，推导出一种使用标准齿轮滚刀近似加工蜗轮的方法。

Additionally,.we also designed a feasible morphing-wing mechanism whose motion is closely to the wing-motion of the long ear bat.

本研究亦利用最佳化方法获得近似长耳蝙蝠翅膀箪呇扫u之目标曲线的翅膀动力输入机构。

To match the boundary conditions, the modified Bessel functions are expanded to the planar wave in the interface. Then the eigenvalue equations of different polarizations are obtained by scalar approximation. At last, the relations between propagation losses and the states of polarizations, the geometric structures of the fiber, the refractive index and thickness of the polymer are calculated.

论文首先给出其等效折射率数学模型，在纤芯和包层中，光场用贝塞尔函数及虚宗量贝塞尔函数的求和表示，在聚合物和金属中用指数函数的求和表示，交界面上采用将虚宗量贝塞尔函数用平面波展开的方法匹配边界条件，然后利用标量近似求出极化D型光纤不同偏振态光场模式的本征值方程，最后通过数值计算得到光纤的传输损耗与抛磨平面和纤芯之间的距离，聚合物粘接材料的折射率和厚度，以及偏振态之间的关系。

Based on the theory of cosine crossing point, the combination of three-sector approximate cosine crossing point and regulation sampling to compute trigger angle on line was given.

根据余弦交点法的原理，提出了三段近似余弦同步波和规则采样结合的一种在线计算触发延迟角的方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。