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This article presents an improved EOQ inventory model with time-varying demand and time-varying purchase price.

提出了一种需求随时间指数增长,同时采购价值时间指数下降的改进EOQ库存模型。

A reasonable warmer winter indexin the framework of the three equiprobability categories(i.e.warmer,normal and colder categories)is proposed based on the winter temperature data observed at 565 stations in China during 1956-2005,where the IWWI is defined as the ratio of the station number of warmer category over the total number of stations.

利用全国565个台站1956-2005年冬季平均温度资料,将多年温度变化划分为偏暖、偏冷和正常三类等概率气候事件,由此给出了一个新的暖冬指数和暖冬的定义。结果表明:暖冬指数与中国冬季温度的变暖趋势相一致,并表现出显著的年代际变化特征,其变率分别为10%/10a和0.4℃/10a。近50a暖冬事件共计发生13次,其中近85%的暖冬发生在1986年以后。

Both exponential and Erlang distribution models for irrigation events are developed.

研究了指数分配和非指数分配模型及10个连续的灌溉周期。

At the same time we brought forward a simulation of the forward collision warning model with 29dof vehicle model developed by State Key Laboratory of Automobile Dynamic Simulation of JiLin University, simulation showed that the model realized the expecting request. 3、It is the membership function of evaluation index that caused flat effect of some certain index and also because of truncation error of computer that the model can not identify relative safety of safe points and unsafe points.

在对驾驶员最优预瞄加速度模型的研究过程中,发现原有模型模糊决策环节的四个评价指标中由于部分指标采用了分段函数作为隶属函数而导致评价指标的平台效应,进而影响到相对接近度指数出现平台效应,又由于计算机截断误差的存在,导致相对接近度指数无法分辨绝对安全点的相对安全性和绝对危险点的相对安全性。

Compared to the traditional forcast error variance decompostition, this new method doesn't depend on the order of the variables in the VAR model.

文章利用广义方差分解研究了沪市各个分类指数之间的关系,显示了系统冲击在各个行业指数之间传递的特点。

Results There were significant differences between MDS and CAA in Hb, red cell distribution width-coefficient variation, immature reticulocyte fraction, BPC, the ratio of G1 (the sum percentage of myeloblast and premyelocyte) to G2 (the sum percentage of neutrophilic myelocyte and metamy-elocyte), the ratio of E1 (the sum percentage of proerythroblast and early erythroblast) to E2 (the sum percentage of intermediate erythroblast and late erythroblast), megakaryocyte count,erythroblast PAS, neutrophil alkaline phosphatase, and serous levels of indirect bilirubin,lactose dehydrogenase, folic acid, VitBl2 and ferritin.

结果 MDS患者血红蛋白,红细胞体积分布宽度。变异系数、未成熟网织细胞比率、血小板计数、骨髓原始细胞及早幼粒细胞之和与中性中幼粒细胞及中性晚幼粒细胞之和的比值、原始红细胞及早幼红细胞之和与中幼红细胞及晚幼红细胞之和的比值、巨核细胞计数、有核红细胞糖原染色阳性率和阳性指数、中性粒细胞碱性磷酸酶染色阳性率和阳性指数、血清间接胆红素、乳酸脱氢酶、尿酸、叶酸、维生素B12(VitB12)、铁蛋白水平等常规实验室指标与CAA患者比较差异有统计学意义。

The fidelities of the system surge periodically from 0 to 1 for the etceteras Bell state at original time when average photon number of two-mode entangled coherent states cavity fields are very small.

对于好腔,若原子初始时刻处于相干保持态,系统保真度呈指数单调衰减;若原子初始时刻处于其余Bell态之一,系统保真度呈指数振荡衰减,且随着腔场初态的平均光子数的增加,系统保真度的振荡频率增大,振幅减小。

Gold usually moves with it, not in the opposite direction as it has lately, notes Commerzbank analyst Eugen Weinberg.

德国商业银行的分析师温伯格说,金价通常与该指数同向而动,而不是像最近那样与该指数反向运行。

The results show that the indexes of diversity and evenness are 1.634 and 0.8397,both locate on middle position.

结果表明,香日德绿洲景观多样性指数和均匀性指数分别为1.634和0.839 7,均处于中等水平。

With detailing division, the landscape diversity and evenness indices were very high.

随着景观要素类型的细分,景观多样性指数和均匀度指数都有所提高。

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推荐网络例句

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%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。