As shown, you receive a warning message that the test database wasn't created because it already existed.
如上所示，您收到一条警告消息，指明测试数据库未创建，因为它已经存在。
Finally, Rails rolls those changes back to return the database to the state that existed before the test method ran.
最后，Rails回滚这些变化，将数据库返回到测试方法运行之前的状态。
The problem existed in many supervision and test for the thickness of protection layer for steel bar in engineering structure body are approached and some suggestion are proposed in this paper.
本文结合对大量工程结构实体钢筋保护层厚度的监督检测，对开展这项工作中存在的一些问题进行探讨，并提出了一些建议。
A life forecasting method for aerospace relay was presented here according to the problem existed in the reliability screening test method for aerospace relay.
针对现有航天继电器可靠性筛选试验方法中存在的问题，提出了一种航天继电器寿命预测方法。
Based on an analysis of the problems existed in DC voltage withstand test for rubber plastic cable, some methods currently suitable for testing rubber plastic cables are compared.
在分析橡塑电缆直流耐压试验存在问题的基础上，对目前适合的橡塑电缆试验的几种方法进行比较。
This paper points out the problems existed in the experiment to test the characteristic curve of diode by voltammetry, and presents a method to improve the experiment.
指出了一般用伏安法测二极管特性曲线一实验中存在的问题，同时给出其改进方法及在实验中应注意的问题。
The industrial test and application of SLON 1500 vertical circular and pulsed high gradient magnetic separator were introduced, the advantages and existed problems of the equipment were summarized.
介绍了SLON - 1500立环脉动高梯度磁选机的工业试验和应用情况，总结了该设备的优点及存在的问题。
In order to give service to practice, the third part puts forward improvable measures, in the light of problems existed in the structure of psychological test.
第三部分针对目前测试结构存在的一些突出的问题，提出了相应的改进、优化测试机构的措施，使心理测试技术更好地服务于司法实践。
The cracks produced in the automatic SAW welding test are existed in the weld, and has nothing obviously with WGJ510C2 steel.
WGJ510C2钢在自动埋弧焊焊评试验中所产生的裂纹均在焊缝金属中，与母材没有明显的相关性。
The test result shows the engine overheat problem long time existed in ZA6440 light bus has been solved by the improved cooling system.
试验结果表明，改进后的冷却系解决了ZA6440轻型客车长期存在的发动机过热问题。
The test results show that above technique is able to encode about one coefficient per clock-cycle, 15times existed techniques.
实验结果显示，该文方法的编码速度约为每时钟编码一个系数，比已有技术提高约15倍。
The problems existed in particle size distribution, chemical composition and producing of domestic synthetic test dust are also proposed.
详细列出了国内人工尘在粒径分布、化学成分及研究制备方面尚存在的问题。
Some better ideas to solve the problems that existed in the repeated drained direct shear test, such as the test time is so long and the results of the test are not logical .
就现行排水反复直接剪切试验中所存在的问题，如时间长，试验结果不理想而提出了一些改进办法。
The existed designing method and the constructional detail of the split columns and the joints of frame were verified by test.
验证了已有的分体柱及分体柱框架梁柱节点的设计方法和构造要求；
Presents the two-stage heat pump test-bed designed by the authors, analyses the problem existed in experiment and offers the improving method.
介绍了自行设计的双级热泵实验系统，分析了实验中遇到的问题，提出了改进方案。
There existed a positive correlation between the yield of population and the average yield of test cross.
改良群体产量与相应测交产量平均值之间呈正相关。
Two-velocity analysis method can develop the pile integrity test, average wave speed and wave-up curve separated from measured signal under the condition of existed foundation.
采用双速度测试和分析技术可以解决在既有基础下基桩的完整性、平均波速以及从实测信号中分离出上行波曲线。
The existed problems in well test study for gas condensate reservoir are presented and the future research is predicted.
提出了凝析气藏试井研究存在的问题，并对以后的研究方向进行了展望。
The optimized result is consistent with the theoretical analysis, the optimal inner frame shape is similar to that of the test turntable existed abroad.
优化结果与理论分析一致，最优内框形状和国外转台形状相似。
Based on the test, the conclusion is that the causality and linear functional relation are existed between rock and AC impedance spectra. AC impedance can disclose the properties of rocks.
岩石的种类和岩样的物理状态与交流阻抗谱之间具有因果关系和线性函数关系，可以通过交流阻抗谱特征来研究岩石的物理性质。
Test results show the method can much better reflect the original time series. Comparing this method with the existed ones, the smaller fitting errors are achieved.
实验结果表明，与已有方法相比，该方法能近似表示原时间序列，且拟合后的时间序列和原时间序列之间的拟合误差更小。
By means of chemical composition analysis, mechanical property test and microstructure examination, the results showed that this defect was result of rough surface and not the crack existed in matrix.
采用化学分析、力学性能试验和金相检验等方法对该裂纹进行了分析。结果表明，此缺陷是由于试验环原始表面的粗糙度过大造成的。
By means of chemical composition analysis, mechanical property test and microstructure examination, the results showed that this defect was result of rough surface and not the crack existed in matrix.
采用化学分析、力学性能试验和金相检验等方法对该裂纹进行了分析。结果表明，此缺陷是由于试验环原始表面的粗糙度过大造成的。
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