查询词典 test-driving

Achievement test ; language teaching ; test design ; reliability ; validity ; test analysis.

成绩测试；语言教学；试题设计；信度；效度；分析

In the post-test or postpones-test performance of the achievement test, there were no significant differences between the vary degree students.

四、在实验组与控制组中，男女学童的后测与延后测成绩均无显著差异。

At the same W/C condition, ocean-sand (standard and non-standard) is mixed, non-standard ocean-sand shall have more compressive strength than standard ocean-sand about 10%, Add slag additament to motor test sample of ocean-sand mixing, bending strength shall be according to slag additament, but 40%~60% slag additament shall be quite obvious. Motor test sample of ocean-sand mixing shall be compared type Ⅰ cement with type Ⅱ cement, to make use of type Ⅱ cement to motor test sample of ocean-sand mixing shall have more compressive and bending strength about 10%, Rising of strength is best among non-standard sand mixing.

若添加炉石於海砂所拌和的水泥砂浆，其抗弯强度会随著炉石添加量的增加而增加，以40%~60%的炉石替代量为最佳；以第Ⅰ及第Ⅱ类型所拌和的海砂水泥砂浆试体做比较，依晚期强度而言，第Ⅱ类型水泥所拌和的试体，其抗压及抗弯强度比第Ⅰ类型水泥约高出10%左右，其中以非标准砂所拌和的试体强度上升最大。

For example: It can test the volume of a little of cotton filters; in the case of that just contact air and not breakage its physical construction, it can test the real cubage and proportion of a aerolite;anf in the case of that not change the container of some liquit in a abregulation container this equipment can test its volume; etc.

可测量一团棉纤维的净体积；在仅接触空气不破坏其物理结构的情况下能测量一块陨石的实际体积和比重；在不更换容器的情况下能测量一个不规则容器内的液体的体积；等等。

In order to change the test of closed water for the high pressure vessel for the closed air test, according to the requirement of airtightness for high pressure vessel,the quantitative mathematical model for closed water test was built by analysis of free going out for small orifices in fluid mechanics.

为将高压容器密闭性的闭水检测改为闭气检测，根据高压容器密闭性能的要求，通过对流体力学小孔口自由出流分析，建立了闭水试验定量数学模型。

The methods of reliability and validity test of indictors system are Spearman rank correlation test method and Cronbach's alpha coefficient test way.

更多 arman等级相关检验两种方法评价结果的一致性，检验指标体系的效度，利用SPSS的信度检验模块，检验指标体系的信度。

Papers with statistical testing should state the name of the test, the n for each analysis, the comparisons of interest, a justification for the use of that test, the alpha level for all tests, whether the tests were one- or two-tailed, and the actual P value for each test.

带统计检验测试的论文要说明检验测试的名字，每个分析里n代表的含义，份儿利益的对比，使用该检验测试的理由，是第一次该每个检验的α水平测试，还是重复前者的是第一次单侧检验还是或双侧第二次检验测试，及每个检验测试中真实P的值。

The test results show that the high temperature strength of the alternative structural systems from the test are not the same as that from laboratory test.

试验结果表明：某些方案的高温浸水车辙的结果与室内试验结果不尽一致。

The basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.

文中对汽车碰撞安全性的设计理论和方法进行了归类和总结，其中包括经验法、解析法、多刚体动力学法、试验法以及有限元方法等；重点介绍了碰撞有限元法的基本理论和有关算法，涉及到有限元求解控制方程、单元离散、沙漏模态控制、时间积分、材料模型和应力修正、薄壳单元算法以及接触碰撞界面算法等，探讨了有限元计算中的材料模型参数获取技术，开发了相应的材料试验装置及材料模型参数反求软件，在此基础上进行了基本的碰撞仿真算例和试验对比研究；文中通过应用有限元方法研究了薄壁构件的碰撞吸能特性，指出了设计薄壁吸能构件时需要考虑的几个主要影响因素，即焊点、壁厚、横截面和预变形等；在关于车辆部件的碰撞安全性能设计中进行了吸能转向机构和自适应安全气囊的仿真研究，提出了吸能转向机构和自适应安全气囊的仿真研究方法；文中最后探讨了整车碰撞性能的设计与改进方法，提出了以理想碰撞特性为目标，采用分段加速度或者根据碰撞时间进行设计的反推设计法、部件吸能仿真优化设计法等量化设计方法，并通过综合应用文中所讨论的相关技术进行了整车碰撞性能的设计与改进实例研究，所选定的车型是大众化的普通轿车和碰撞安全性基础较差的微型面包车，研究结果表明，本文所提出的设计与改进方法是适用而有效的，具有重要的工程实用意义和价值。

The triple test (also known as the Leed's test or the Bart's test) looks at the levels of blood chemicals between 16 and 18 weeks, to find out the chance of the of baby having Down's syndrome, spina bifida or anencephaly.

三重考验（也称为作为低能电子衍射的测试，或巴特的测试）着眼于各级血液化学品之间的16和18个星期，以了解的机会，该婴儿有唐氏症儿，脊柱裂或anencephaly 。

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％。