查询词典 average

Based on monthly average air temperature data in Jinzhou from 1954 to 2005,the seasonal and annual average air temperature changes were analyzed by linear trend method and moving average method.

根据1954—2005年锦州累年逐月平均气温资料，采用一元线性趋势估计和滑动平均方法分析了近半个世纪锦州季和年平均气温变化趋势；采用滑动t检验法分析了气温突变。

If all revenues earned in a period are collected and that depreciation is the only noncash expense, the average net income can be reached by subtracting average depreciation from average cash flow.

如果一定时期内的收入都已经收回且折旧是惟一的非现金费用，则从平均现金流量中减去折旧即是平均净收益。

From our results we know that the average error of the Lagrange interpolation sequence and the Hermite interpolation sequence based on the Chebyshev nodes in the 1-fold integrated Wiener space equal weakly to the average error of their corresponding optimal approximation polynomial in the 1-fold integrated Wiener space,and as a kind of information-based operation,they have simple form and their recover functions are polynomials,in the 1-fold integrated wiener space,their average error equal weakly to the corresponding minimal information radius whose permissible information operators class is function values.

通过我们的结果可以知道，基于第一类Chebyshev多项式零点的Lagrange插值算子列和Hermite插值算子列在1-重积分Wiener空间下的平均误差弱等价于相应的最佳逼近多项式在1-重积分Wiener空间下的平均误差，并且作为形式简单且恢复函数为多项式的一种信息基算法，其在1-重积分Wiener空间下的平均误差弱等价于相应的以函数值计算为可允许信息算子的最小平均信息半径。

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。

According to the J.D. Power Initial Quality Study－which measures product quality using a metric called "PP100," or problems per 100 vehicles－China's industry average PP100 rating stands at 231, or almost twice the U.S. average of 124. And among domestic Chinese brands, quality problems are almost twice as frequent as in locally built international brands （an average of 368 PP100 for domestic brands, compared with 189 for international brands）.

J.D。 Power调研公司《新车质量调查》（依据被称为PP100的测评标准，即以每百辆车的问题数量为测评汽车质量标准）的结果显示，中国汽车业的PP100平均高达231，几乎相当于美国汽车业平均值124的两倍；而中国自主品牌汽车的故障发生率，也几乎是同样产自中国的外资品牌汽车的两倍。

And the average WDI for every month was calculated from 60 decades WDI and the drought frequency for every month was obtained with a drought criterion. Results showed that: in spring, North-western China, Northern China and Southern China have a higher drought frequency; in May to August, the region that has a higher drought frequency focus on North-western China and Northern China; from September to December, North-western China, Northern China, center China and Sichuan basin has a higher drought frequency (6) The relationship between average WDI for all the 720 decades in 20 years and average precipitation was analysed and was used to regionalize drought in China.

5分析我国近20年干旱发生的时空分布特征：利用1982-2001年NOAAAVHRR8km数据集，计算了20年来我国各旬干旱空间分布，并根据一定的干旱发生判断标准，统计我国不同地区在各月相发生干旱的频率和各月份平均WDI，初步分析我国干旱发生的时空格局，结果表明：在春季，西北地区、华北平原和华南大部分地区的干旱发生频率都比较高；在5-8月份，高频率干旱发生地区就主要集中在西北和华北平原地区；9-12月份干旱发生高频率地区在主要在西北、华北、华中和四川盆地等地。

The optimal reconstruction windows of patients with stable HR(≤75 bpm and≥91 bpm) were concentrated in 71%,ranged from 65%-80%, and in 41%,ranged from 32%—50%,respectively.The prospectively ECG-gated DSCT coronary angiography can be used in patients with stable HR(≤75 bpm and≥91 bpm) in abstract.②To explore the clinical application of prospectively ECG-gated transverse DSCT coronary angiography.Methods Two hundreds patients[Body mass index:23-25 kg/m~2,122 patients(average HR≤75 bpm),78 patients(average HR≥91 bpm)]with suspected or known coronary artery disease underwent prospectively ECG-gated transverse DSCT coronary angiography,among them,30 patients underwent selectively coronary angiography,grouping them into 2 groups according to the average HR of scanning.Group A(17 cases,HR≤75 bpm),group B(13 cases, HR≥91 bpm),the DSCTA results were compared with SCAG.Then,calculate the accuracy of patients in each group and evaluate the agreement of accuracy between DSCTCA and SCAG by Kappa statistics.

方法回顾性分析200例行适应性前瞻性心电门控双源CT冠状动脉血管成像的患者(排除扫描过程中，屏气配合差，出现心律不齐的患者及行支架置入或搭桥术后复查的患者)，包括屏气时平均HR≤75 bpm患者122例，HR≥91 bpm患者78例；其中30例同期行选择性冠状动脉血管造影，按屏气时HR将其分为2组，A组17例：HR≤75 bpm，B组13例：HR≥91 bpm，分别与金标准SCAG对照，计算2组患者的阳性诊断准确率，应用SPSS 13.0统计学软件，利用Kappa检验比较每组患者的2种诊断方法诊断结果的一致性，利用两样本率x~2检验，比较2个心率组间的诊断准确率有无明显统计学差异，并计算此30例患者的平均有效辐射剂量。

The frames with low and slowly changing average instantaneous frequencies were identified to be the periodic sonant segments and the frames with high average instantaneous frequencies were identified to be the surd segments based on the characteristics of the average instantaneous frequencies of IMFs derived from speech signals.

根据语言信号特定阶IMF平均瞬时频率的特征，将平均瞬时频率低且变化缓慢的语言帧作为周期性强的浊音段，而平均瞬时频率高的语言帧判别为清音段，组合处理后的结果最终得到语音段数据。

According to the Fuzhou Bureau Secretary Zhuguanghua briefing, which was sub-sections, sub-level, the estimates were more than 100 pieces of Fuzhou Urban, together 2,600 mu of land use right of access to land plots, land acquisition costs, costs and Ken subsidiary public facilities fees, the cost of public infrastructure costs for detailed calculations, eventually reached the average ordinary commercial housing development and construction costs, the average profit and their average share of the cost structure.

据福州市物价局局长朱光华介绍，测算工作是分地段、分等级进行，此次测算共对福州市市区100多块、合计2600多亩取得土地使用权的地块，其土地取得费用、建安成本以及附属公共配套设施费、公共基础设施费等成本进行细化测算，最终得出普通商品房开发建设的平均成本、平均利润以及房价成本结构中各自所占的比重。

The average concentrations of CO and NO2 at the toll gates don't exceed the indoor and outdoor air quality standards except for the toll gate in Chongqing and Chayuan. One-hour average concentrations of outdoor and indoor THC are 7.728 mg/m3 and 7.216 mg/m3 respectively, and exceed ten times of the indoor air quality standard. One-hour average concentrations of indoor and outdoor PM10 change acutely respectively, and the their maximum concentrations are 0.631 mg/m3 and 0.217 mg/m3 which exceed indoor air quality standard and the second class of ambient air quality standard.

重庆站亭内外NO2和茶园站亭内外CO的小时平均浓度值超过环境空气二级标准，其它各收费亭内外NO2和CO的小时平均浓度均值未超过相关标准限值，其最高值均超过相关标准；各收费亭内外THC小时平均浓度均值分别达7.728 mg/m3和7.216 mg/m3，均超过标准限值10倍以上；收费亭内外PM10变化幅度较大，亭外均值0.217 mg/m3，高于环境空气质量二级标准，亭内最高值达0.631 mg/m3，是室内空气标准日均值标准限值的4.2倍。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。