-ar的例句大全

The paper proves that with AR ( 1) process for the end demand, if retailer adopts moving average or exponential smoothing to forecast the non-zero lead time demand, then bullwhip effect in demand forecasting and processing will occur;

证明当存在订货提前期时，零售商采用移动平均法及一次指数平滑法预测会导致在需求预测，信息处理及传递过程中产生牛鞭效应；

AR model is wide used time series model.

时间序列模型主要是自回归模型。

An Experimental Study of Ionization of Ar with Time-of-Flight Mass Spectrometer

用飞行时间质量分析器研究Ar的离子

Firstly, the autoregressive ( AR) models with proper order are used to approximate the time variation of the coefficients of wireless time-varying channel.

我们使用适当阶次的自回归（AR，autoregressive）模型去近似时变瑞利衰落信道，通过一个训练序列的训练过程来建立AR模型参数和获得初始的观测。

By modeling the time-varying channel for first-order AR model with certain parameter, channel states are estimated dynamically from the observed equation by using the UPF algorithm.

该方法将时变信道建模为&阶确定参数AR模型，然后利用UPF算法，结合观测方程动态地估计时变信道状态。

The results showed that the change of time-varying parameters ( coefficient) in dynamic AR model has a regularity. Its increments are piled up by some simple period functions.

结果表明，动态自回归模型时变参数（时变系数）的变化是有规律的，其增量大体上是一些简单周期函数的叠加。

A new method for time-varying AR model

一种新的时变参数AR模型分析方法

The results show that tiny crack main by using the unqualified protect gas ( Ar) during welding could cause the increasing hydrogen contain in the weld area, created the hydrogen embrittlement crack.

结果表明：由于焊接工艺规范控制不当，未及时进行消氢处理，焊件的碳当量提高具有明显的淬硬倾向，焊接结构和较大的焊件厚度引起拘束应力等综合作用产生了延迟裂纹。

The low-sug ar, low-sweetness preserved kiwi are protected color and depuckeried and prepared by boiling mixed solution of sucrose, starch sug ar once in a way.

采用蔗糖、淀粉糖一次煮制的方法，并进行护色、脱涩处理，研制出低糖、低甜度猕猴桃果脯。

Formation and evolution of Early Precambrian crust in Korean Peninsula ― formation stages of palaeocontinent ( Ar-Pt_1)

前寒武纪早期朝鲜半岛地壳的形成与演化&古陆的形成阶段（Ar-Pt1）

K-Ar isochron ages of Precambrian rocks in northern and northeastern China

我国华北及东北地区前寒武纪岩石K-Ar等时年龄

Polycarbosilane from dry spinning to SiC fiber through thermochemical curing, which is catalysed by zirconium iso-propoxide ( ZIP) under Ar gas stream, is transformed from thermoplastic to thermoset structure.

以异丙醇锆（ZIP）为交联剂、聚碳硅烷（PCS）为先驱体，在Ar气氛的保护下通过干法纺丝、热化学交联工艺使PCS从热塑性转变热固性结构。Iso的相序。

By comparing the pyrolysis process of PAN in Ar with that in vacuum, it is found that the thermal activation energy in vacuum is lower than that in Ar, which indicates that the vacuum atmosphere favors the degradation reaction.

通过比较聚丙烯腈在氩气和真空氛围下的热解，可以得出聚丙烯腈在真空氛围中的热解反应活化能低于氩气氛围中的活化能，说明真空氛围能够降低热解反应的温度，加速反应的进行。

Thermal Annealing Behaviour of high dose~ ( 40) ar~+ ion implanted silicon layers

高剂量的~（40）Ar~+离子注入硅热退火行为的研究

Cracking of Liquefied Petroleum Gas in H_2/ Ar Thermal Plasma

液化石油气在氢/氩热等离子体中的裂解

The denitrogen still happened as Ar was filled in low vacuum ( 9 300 Pa), in this case the denitrogen was second-order reaction with mass transfer rate coefficient 0.022 cm/ s.

在低真空（9300Pa）过程充Ar，仍会发生脱N行为，此时脱N为二级反应，传质速率常数为0022cm/s。

Influence of O_2/ Ar Ratio on Microstructures and Properties of Hafnium Dioxide Films

不同氧氩比例对氧化铪（HfO2）薄膜的结构及性能的影响

Single crystal silicon slice as target, Ar and O_2 respectively as sputtering and reacting gas, a silicon oxides ( SiO_x) film was deposited on Al substrate by reactive magnetron sputtering.

以单晶硅片为靶材，高纯Ar和O2分别为溅射气体和反应气体，采用反应磁控溅射法在铝基体上制备了硅氧化物薄膜。

Behaviour of Ar~+ Ion in Reactive Ion Etching of ⅲ-ⅴ Compound

氩离子在反应离子腐蚀Ⅲ-Ⅴ族材料中的作用

Influence of Ar and Nz Flow Ratio on TiN Thin Films Prepared by Magnetron Sputtering

氩气与氮气流量比对磁控溅射法制备TiN薄膜的影响