查询词典 valid formula

In this case, the usual formula for a metabolic acidosis (which assumes full compensation) may not be valid.

在这种情况下，惯常代谢性酸中毒公式（这些公式的前提是完全代偿）就不使用了。

This paper overviews the various algorithms for least square collocation, discusses the matrix QR decomposition, derives the relationship between QR decomposition and generalized inverse matrix, and obtains least square inverse used for calculating matrix. In addition, the estimation formula for least square collocation by QR decomposition and its accuracy formula are derived. A case study is conducted using gravity anomaly test and calculation to demonstrate that the QR method is correct and valid in least-square collocation calculation.

分析了目前采用的最小二乘配置法解算方法，在讨论了矩阵的QR分解方法的基础上，推导得出了矩阵QR分解与广义逆矩阵的关系，得出了可以直接利用QR分解求解矩阵的最小二乘逆，并推导了应用QR分解求解最小二乘配置的估值计算公式和精度估算公式，最后通过重力异常实例进行了计算，得出矩阵的QR分解用于最小二乘配置解算的正确性和可行性。

Compared with published experimental data in reference, the calculated results show that use of temperature coefficient of elastic modulus is valid to modify the empirical formula.

通过与文献中的实验结果对比得知，用材料弹性模量温度系数对经验公式进行修正是有效的。

The dissertation includes the work as follows: Firstly, we present a random graph model with spatial reuse for a dense MANET which using directional antennas. The analytic formula of several important performance parameters for the MANET are obtained under the DSR routing protocol, such as the average flooding distance, the probability generating function of the flooding distance, the probability of a flooding route to be symmetrically valid, the average time to find a symmetrically valid route and the cost to successfully route a data packet to its destination. We compare the two models with spatial reuse and without spatial reuse by evaluating these parameters. It is shown that the spatial reuse model is much more effcctive in terms of the performance of the dense network with directional antenna, because the bigger is the degree of spatial reuse, the smaller is the average flooding distance.

在定向天线技术的支持下，建立了移动自组网络空间可重用的贝努利随机图模型，获得了DSR路由协议下平均泛洪距离的解析公式和泛洪距离的概率母函数：给出了有效对称路由概率、发现有效路由平均时间、成功路由代价等关键性能参数的解析分析；在网络性能参数定量分析的基础上，对空间可重用和无重用的网络进行了比较分析，结果显示空间重用度增大，则平均泛洪距离、路由发现时延、网络代价减少。

A special case,that the effective Fresnel number turns out to be a pure imaginary number,was discussed,and it is indicated that the simple formula evaluating the relative focal shift is still valid in this case.

还讨论了一种特殊等效菲涅耳数为纯虚数情况。结果证明，在这种情况下，该相对焦移简单公式仍然有效。

Make sure you entered a valid date in the formula.

请确认在公式中输入了有效的日期。

The 3dB formula is valid for headphones and for loudspeakers.

这个3dB公式对耳机和喇叭同样有效。

In chapter 2,the basic characteristics of millimeter wave microstrip line are analyzed, and we have introduced the calculating formula of its valid permittivity and resistance speciality the discontinuity of the microstrip and the parallel coupling microstrip .

第三章介绍了微波介质谐振器稳频压控振荡器的概况，在此基础上分析了介质谐振器稳频原理和设计方法，再由FET振荡器的原理讨论了变容管电调谐的原理和设计方法。

The wind chill temperature (often popularly called the wind chill factor ) is always lower than the air temperature for values where the wind chill formula is valid.

在风寒温度总是比空气温度低的价值观如风寒公式是有效的。

With the algorithm for searching valid spots, the rmsemittance formula programming is realized successfully. The author solved theproblem of an image data converted into void data except to the background.

作者研发了rms发射度的数值统计公式计算发射度的程序，研发了快速寻找有效光斑的算法，解决了把整幅束流图像剔除本底后快速转化为有效数据，使束流发射度的软件测量系统成为一个在线软件系统。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。