百分误差

There are two goals in this article. The first one is to investigate an EOQ model with immediate return for imperfective items under an increase of price. Another purpose of this paper is to investigate and EOQ model with immediate return for imperfective items under imperfect inspection.

本研究之目的分为两部份，第一即是针对进货中检验出之不良品可立即退货之产品，探讨在价格预期上涨下之最佳订购批量；第二是针对进货中之不良品於百分百筛选检验中会有检验误差，且判定为不良品会立即退货之条件下之最佳订购批量。

And the reasonable proposal for the construction the region electrical power system was put forwardThe power load forecast is the basis of the power system planning.With the actual planning of regional development,uses a scientific and effective load forecasting methods forecast plans the local load electric quantity,is an important work to the regional power system planning.This dissertation uses the BP algorithm, proposed a double hidden layer structure artificial neural network to the forecast ultra-short-term power system load.After the simulation with the actual data,the method which this dissertation proposed compared to the traditional linear extrapolation Prediction method average absolute percent error of 2.5 percentage points,ten minute load forecasts achieve the average absolute percentage error are smaller than 2.5%accuracy.

本文利用人工神经网络BP算法，提出了一种双隐层结构的电力系统超短期负荷预测方法，经过对实际数据的仿真实验，本文提出的神经网络超短期负荷预测方法比传统的线性外推法预测平均绝对百分误差降低2.5个百分点，十分钟负荷预测达到平均绝对百分误差小于2.5%的精度。

Prove (8.92) and then calculate the percent error in the ground-state energy, using this triangular function.

证明（8.92），然后用三角函数计算基态能量的百分误差。

The relative standard deviation,the percent standard error of prediction samples and the percent standard error of calibration samples were used for evaluating the ability of the neural network.

选择红外谱图严重重叠的五种大气有机毒物作为多组分体系。相对标准误差、百分标准预测误差和百分标准校准误差被用于衡量神经网络的性能。

The percentage error was 43%.

百分误差是 43%。

B If u and h are measured with possible errors of 1% and 2% respectively, what is the possible percentage error in

若 u 及 h 量度时的可能误差分别为 1%及 2%，问计算 R 时的可能百分误差为何？ 8 分

By means of PSO and taking the minimum mean absolute percentage error of the forecasting model as objective function, the optimal model parameters are chosen.

通过粒子群优化算法，以模型预测平均绝对百分误差最小为目标，选择最优的模型参数。

The present investigation deals with the differential spectro photometric method for the determination of high content rhodium using thoron as reagent.

应用差示分光光度法在适当的条件下，测量高浓度元素，相对误差可以降低到百分之一以下，能同重量法和容量法相比。

The gas chromatography quantitative analysis conditions of gum rosin were studied by selection of chromatographic columns and chromatographic resolution conditions with the pure rosin sample of P.

用纯思茅松松香样品，通过选择色谱柱和色谱分离条件，研究确定了脂松香气相色谱定量分析的条件，定量分析了松香树脂酸的相对百分含量；定量分析数据通过统计学中的Grubb′s检验法进行误差检验，在确定的条件下脂松香气相色谱定量分析结果具有稳定性、准确性和复现性结果；对马尾松、湿地松松香定量分析也取得同样结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。