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With Lo; Reducing total tardiness cost in manufacturing cell scheduling by a multifactor priority rule.


With this technique, we are able to demonstrate statistically significant single and multifactor interactions.


We will introduce a multifactor jumpdiffusion model which significantly extends existing models in the literature.


We also show how the twofactors can be combined with other identity information available in the federation to provide multifactor authentication.


We cal1such an interval a multifactor interval for that polynomial.

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 An experiment on metal—cutting generally requires considerable time and material and is therefore a relatively expensive procedure. In this paper, a general cutting—force predicting equation is investigated with three independent variables, viz., cutting speed, feed, and depth of cut. The predicting equation is developed by a design of multifactor experiment, as proposed by S. M. Wu, instead of the conventional onevariableatatime method. With this new method the number of tests required to develop... An experiment on metal—cutting generally requires considerable time and material and is therefore a relatively expensive procedure. In this paper, a general cutting—force predicting equation is investigated with three independent variables, viz., cutting speed, feed, and depth of cut. The predicting equation is developed by a design of multifactor experiment, as proposed by S. M. Wu, instead of the conventional onevariableatatime method. With this new method the number of tests required to develop a cutting—force predicting equation can be substantially reduced. Only 8 tests are required in this experiment. The theoretical basis of this method is also considered in this paper.  金属切削试验通常费时耗料,是一项需要付出巨大代价的工作。在本文中,对包含三因素(切削速度、走刀量与切削深度)的切削力普遍公式进行了试验研究。建立切削力公式时,采用正交设计的多因素试验法以取代一般常用的单因素试验法。该法首先由S.M.Wu氏用于金属切削中刀具寿命的试验研究。采用这一新方法建立切削力公式时,试验次数可显著减少;在本试验中仅用了八次试验。另一方面,本文还对此法之理论依据进行了分析。  The optimal principal dimensions of a 15000 tons deadweight dry cargoship are calculated by two optimization algorithms SCDD and SUMT.Seventeen calculated schemes are to be investigated.It is shown that respectiveextremum of each unifactor objective function for the two algorithms are consistent.Also,multifactor objective function optimization schemes are calculatedby the SCDD method.  本文用 SCDD 和 SUMT 两种最优化方法对一万五千载重吨干货船的主要尺度作了最优值计算。共探讨了17个计算方案。结果表明,对于单因素目标计算方案,两种算法对应的目标函数极值是一致的。此外,还用 SCDD 法计算了多因素目标优值方案。  In order to study the relationship between salt uptake and hypertension,weinvestigated the blood pressure and the amount of 24hr urinary sodium excretionin peasants of two nearly villages,the peasants of one village had the habit ofdrinking salttea,while those of the other hadn't.Other conditions were comparable,we found out:(1)The mean of 24hr urinary sodium excretion of the peasants in the saltteataking area was 55.5meq,which was significantly higher than that of the nonsalttea taking area (P<0.01),the... In order to study the relationship between salt uptake and hypertension,weinvestigated the blood pressure and the amount of 24hr urinary sodium excretionin peasants of two nearly villages,the peasants of one village had the habit ofdrinking salttea,while those of the other hadn't.Other conditions were comparable,we found out:(1)The mean of 24hr urinary sodium excretion of the peasants in the saltteataking area was 55.5meq,which was significantly higher than that of the nonsalttea taking area (P<0.01),the mean of systolic pressure,diastolic pressure and average,pressure of the peasants in the former area were also higher than those of the latterby an average of 7.1,6.0,6.2 mmHg respectively (p<0.01).These results tallied with most of epidemiologic investigations on this problemboth abroad and at home,these data supported that the risk of hypertension and/or thelevel of blood pressure in high salt uptake areas were higher than those of low salttaking areas.(2)A positive correlation between the amount of urinary sodium excretionand systolic blood pressure was obtained (P<0.01).(3)Multifactor progressive regression analysis showed that whether in salttearegion or in nonsalttea region,the age and the ratio of sodium/potassium in urineof the peasants could always be selected into the diastolic blood pressure and the meanblood pressure regression equation.  本文是在同一个县内调查了一个长期喝盐茶的地区和一个不喝盐茶地区农民的血压及24小时尿钠、钾排出量。发现:一、盐茶区农民平均尿钠排出量明显高于非盐茶区,平均高55.5毫克当量/日(p<0.01)。同样,盐茶区农民的收缩压,舒张压,平均压水平亦明显高于非盐茶区,平均分别高7.1、6、6.2毫米汞柱(p<0.01)。二、尿钠排出量与收缩压呈正相关(p<0.01)。   << 更多相关文摘 



