正量

This paper presented the research and exploration of mechanism and technics as well as the design of the magnetic circuit of this new compound machining, based on above, establishing the parameter model, meantime, analyzing influential effects on productivity of magnetic and EDM compound machining the holes through large numbers of experiments, including velcoity contrast experiments of pre-compound and after-compound machining with the change of current, velcoity contrast experiments of pre-compound and after-compound machining with the change of magnetic induction, velcoity contrast experiments of pre-compound and after-compound machining with the change of impulse width, experiments of the superficial roughness, experiments of the Electrode wastage, and intersectant experiments analysis as well as the change experiments of current waveforms. Through a number of experiments we analysed the influential effects of magnetic and EDM compound machining, compared the factors with EDM by oneself. A large of experiment records and deducibility have demonstrated that the productivity of magnetic and EDM compound machining is developed by 20%～400% than traditional EDM.

本论文对磁场电火花复合加工这种新的复合加工的机理、工艺和复合加工的磁路设计进行了研究和探索，在此基础上，建立了磁场电火花复合加工的参数模型，同时通过大量的随着电流变化磁场电火花复合前后加工速度对比实验、磁感应强度变化时的加工速度变化实验、随脉冲宽度变化的加工速度实验、表面粗糙度实验、电极损耗量实验、磁场电火花复合加工正交实验分析、电流波形变化等实验，实验分析了影响磁场电火花小孔加工效率的因素，并且跟单一的电火花加工中的影响因数进行了比较，大量的实验数据和理论推导证明磁场电火花复合加工比传统的单一电火花加工的效率提高了20％～400％左右。

Spatial variations of a degree-day factor have great impacts on the accuracy of snow or ice melt modeling.

度日因子是该模型的重要参数，反映了单位正积温产生的冰雪消融量，其空间变化特征对于不同模型模拟冰雪消融过程的精度有较大影响。

Based on a series of shear creep tests of discontinuous plane with regular dentation,the relationship between shear creep and different normal stress,shear stress,and slope ratio is obtained.

文章在规则齿形结构面剪切蠕变试验的基础上，分析了剪切蠕变随不同的爬坡角、正应力和剪应力的影响，拟合了剪切蠕变曲线，并将拟合的方程与Burgers模型的本构方程进行了比较分析，讨论了Burgers模型中剪切模量、粘滞系数的变化规律及其影响因素，取得了较为理想的结论，为结构面剪切蠕变本构方程的建立提出了较为合理简便的方法。

Chapter six presents a two-waves sampling method to estimate a distribution function of a discrete random variable Y.

第六章研究在数据缺失机制形式未知时，通过两步抽样得到了分布函数的相合的估计量，且该估计量是渐近正态的。

The orthogonal test of removing protein with pawpaw proteinase analysed by difference demonstrates: the sequence of the ponderance affecting doffing protein from high to low is the treating temperature, enzyme quantity, the treating time and the pH value.

经木瓜蛋白酶正交试验极差分析，影响因素从大到小排列顺序依次为：温度、酶量、处理时间、 pH 值，最佳处理条件为温度50℃、酶用量为2%、酶解2h 、 pH 为6.0，又脱去剩余蛋白的80.2%，蛋白质浓度降到0.4mg/mL 。

Methods The influence factors of pretreatment conditions were studied by orthogonal test according to the content of toluene and naphthalene in the eluate and its UV absorbance(254 nm).

方法采用正交试验设计以洗脱液中甲苯、萘的量及其紫外吸收值为指标(254 nm)，考察了D-101型大孔吸附树脂预处理过程中的影响因素。

The case of Energizer and Nanfu proves this point.

南孚公司与劲量公司的案例正说明了这一点。

The optimum conditions of supercritical CO2 extraction were determined by orthogonal experiment as follows: extraction pressure 30 MPa, extraction temperature 40℃, 75% ethanol as entrainer (5% of solid material) and extraction time 2.0 h. The yield of volatile oil was 9.92%.

通过正交实验确定超临界CO2萃取挥发油的优化条件为：以75%乙醇（添加量为原料质量的5%）为夹带剂、萃取压力30MPa、萃取温度40℃、萃取时间2.0h，此时，挥发油的收率为9.92%。

The results show that the yield of butyl acetate using the catalysts prepared with the concentration of H2SO4 by 0.5 mol·l-1 and the calcination temperature of 550℃ is the best,which is up to 52.5% when the molar ratio of butyl alcohol to acetic acid is 1:1.3 and without addition of entrainer in the hermetic reactor.

结果表明采用硫酸浸渍液浓度为0.5mol/L，焙烧温度为550℃时所制备的催化剂在正丁醇和乙酸的物质的量比为1.3及不添加任何带水剂的密闭条件下酯化效果最好，酯化率为52.5%。

In 1960's, the famous statist,named Moore, proved the asymptotic normality of one kind of linear order statistic. While Hajek gained the equational condition of the asymptotic normality of rank statistic.

早在二十世纪六十年代，Moore构造了一种较为一般的线性次序统计量，并证明了它的渐近正态性，而Hajek也得出了著名的Hajek基本定理，找出了线性秩统计量渐近性的一个充要条件。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！