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In this paper, based on the specific CNG engine parameters and characteristics, the influence of the injection timing, ignition energy and lean combustion for the engine is tested, in order to explore the control rules of fuel injection, ignition energy and lean combustion and then draw the following conclusions: small injection advance angle of electronic controlled injection CNG engine is optimum

文章根据天然气发动机的具体参数和特性,探索电控喷射CNG发动机在燃料喷射、点火能量和稀燃等方面的控制规律,确定最优的控制参数,开展了喷射定时、点火能量及稀薄燃料等参数对发动机性能影响的试验研究工作,并根据试验结果分析,得出了以下结论:电控喷射WT615CNG发动机燃料喷射提前角要小些为宜

Test results show that as the angle of attack is in the range of 20°~70°,the effects of bump...

结果表明,在20°~70°的迎角范围内,鼓包对圆锥的影响最大,对椭圆截面模型有一定的影响,对带棱截面模型的影响最小。

In comparison with the angle of minimum deviation, the errors are analyzed and the correcting method for the temperature affect is given.

验证实验中,着重就与最小偏向角测量法的对比情况进行了介绍,分析了测量误差,推导了调整误差,样品加工误差对折射率测量的影响,并对环境,特别是温度,的影响进行了讨论,给出了影响曲线及补偿方法。

Measurement of refractive index of the crystal with angle of minimum deviation method .

用棱镜最小偏向角法测量晶体折射率。

The method of minimum deviation angle ; the method of V-prism ; measure accuracy ; principle formula error

最小偏向角法; V棱镜法;测量精度;原理公式误差

The principle formula error of measuring the refractive index by the method of minimum deviation angle and the method of V-prism .

最小偏向角法V棱镜法测量折射率的原理公式误差。

At present, China Excellent javelin thrower lower limb segment placed before the positive tread in the poor backward angle variations of the trunk is small, the level of Pull angle fluctuations, lead to physical decline in the focus of the horizontal velocity, cross-step and go beyond the combination of devices is not ideal, beyond the equipment is not sufficient.

目前我国优秀标枪运动员下肢环节的积极蹬地前摆欠佳,躯干后倾角度变化幅度小,水平拉引角波动较大,导致身体重心水平速度下降,交叉步与超越器械的结合还不理想,超越器械不充分。

First, for the different molar ratio of two monomers mixtures,the different molar ratio of homogeneous polymer is obtained by choosing the proper condition(the reaction temperature is 60℃-70℃, initiator benzoyl peroxideis 0.1wt%- 0.2wt%)from carrying out bulk copolymerization and its refractive index has been measured respectively by the method of minimum deviation angle.

首先,对不同摩尔比值的两单体混合液,选择适合的工艺条件(共聚温度60℃-70℃,引发剂过氧化苯甲酰0.1wt%-0.2wt%)进行本体共聚反应,获得各摩尔比值下的匀质聚合物;并用最小偏向角法分别测量了由系列匀质聚合物制作的三棱镜的折射率。

These above problems, which are very important and valuable in agricultural crops area monitoring, are currently less researched. Hence, in this paper, seven types of common texture and five vegetation indices were respectively added into TM multispectral bands to classify using three different methods, which are Minimum Distance, Maximum Likelihood and Support Vector Machine, and analyze the effect on winter wheat identification accuracy by comparing the classification results. The contexture include Mean, Variance, Homogeneity, Contrast, Dissimilarity, Entropy, Variance, Angular Second Moment and Correlation, and the vegetation indices are RVI, SAVI, RDVI, NDWI and SLAVI.

为此,该文将平均值、方差、均一性、反差、相异性、熵、角二阶矩、灰度相关7种纹理信息以及比值植被指数、土壤调整植被指数、重归一化植被指数、植被液态水含量指数、有效叶面积植被指数5种植被指数信息分别加入到TM多光谱数据中,同时还进行了最佳波段选择,利用最小距离、最大似然和支持向量机3种方法进行分类提取小麦,研究了不同特征信息对小麦测量精度的影响。

In the thesis, it was shown that the latitude variation of the angular dispersion should mainly depend on square sum of lower degree deduced Gaussian coefficients if the non-axial-dipole component vs. the axial-dipole component is small.

本文证明,如果地磁场非轴向偶极子分量相对轴向偶极子分量为小量,那么VGP角散布的纬度变化主要由低阶约化Gauss系数的平方和决定。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。