实验

A total number of 27 machining conditions were designed to be conducted in a random sequence.

实验条件依实验设计有27种组合，实验顺序随机产生的顺序进。

The main difference of two strategies lies in grade 3 and the grade 4 and there is no difference in the grade land the grade 2; there is the obvious positive correlation between sex and the experimental design, and there isnt obvious correlation between sex and the elementary knowledge; the Spearman rank correlation coefficient r_s=

梯度指导策略与突击强化策略的教学效果的主要区别在于梯度3、梯度4的得分，在梯度1、梯度2上基本无差异；性别与实验设计有明显的正相关，性别与基础知识无明显的正相关；生物基础知识与实验设计成绩的Spearman等级相关系数，r_s=0.443，0.4＜r_s＜0.6，即学生的生物基础知识与实验设计成绩呈中等正相关。

The experimental procedure were predigested under the condition that did not effect the experimental results by using alkal potassium persulphate oxidation -ultraviolet spectrophotometry to determine the total nitrogen in water sample with first water instead of redistillation non-ammonia water.

经实验证明，用碱性过硫酸钾氧化-紫外分光光度法测定水样中的总N，以一次蒸馏水代替重蒸馏无氨水，既减少了实验操作程序，又不影响测定结果，同时本文确定了最佳实验条件，并对标准样品进行分析，结果理想。

By way of four complete reflex arcs of comparative test and destroyed reflex arcs,it is showed that the reflex arc consists of sensory receptors,efferent nerve fibers,nerve center,efferent nerve fibers,effecter,and that the four parts must exist together.The test phenomenon is clear after improving the experimental methods,and the rate of success reaches 95%.

从各类实验教材来看，我们发现其证明传入神经和传出神经是反射弧的组成部分的方法有些过于简单[1~3]，不能区别传入神经和传出神经的功能效应；有的使用普鲁卡因麻醉坐骨神经干[4]，麻醉的时间和程度不好把握，很难圆满完成实验，造成实验失败。

Methods Compared with the ultrasonic extraction and the refluent extraction experiment,colorimetric analysis was used to measure the content of active ingredients.

方法比较超声提取和回流提取实验，用比色法测定有效成分；采用回流提取正交实验，并对实验数据经不同的计算和分析比较优选螃蟹脚的提取工艺条件。

On the basis of the previous results and according to the central composite experimental design principles,the method of response surface method with 3 factors and 3 levels was adopted.then the factors influencing the technological parameters were determined by means of regression analysis.response surface and contour were finally graphed with the extraction rate as the response value.resultsthe optimum conditions of lycium barbarum polysaccharides extraction were as follows:the ratio of material to solvent of 1∶32,extraction temperature of 84℃ and extraction time of 2.3 h,one time extraction.conclusionthe yield of lycium barbarum polysaccharides is 11.10% under the optimum conditions.

方法在单因素实验基础上选取实验因素与水平，根据中心组合（box-benhnken）实验设计原理采用3因素水平的响应面分析法，依据回归分析确定各工艺条件的影响因子，以多糖提取率为响应值作响应面和等高线。结果在分析各个因素的显著性和交互作用后，得出枸杞多糖水浸提的最佳工艺条件为：料液比1∶32；浸提温度84℃；浸提时间2.3h；浸提1次。结论在最佳工艺条件下，枸杞多糖的实际提取率可达11.10%。

According to the modeling and the practical experimental condition, a short term experiment project using a regulable temperature and humidity box and a long term experiment project in the storehouse were designed.

根据建模需要，结合实际实验条件，设计了温湿箱短期实验方案及洞库长期实验方案，并且设计了HT-1型温湿度记录仪。

The testing results illustrated that this method of estimation may be used to evaluate the security and reliability of steel served under dynamic load, and may be used to evaluated the reiteration and reliability of Hopkinson test, too.

研究结果表明，这种估算方法是可行的，可以用简单的示波冲击实验代替复杂的应力波冲击实验。该估算方法可以用来评估动态服役用钢的安全性和可靠性，也可以作为评估Hopkinson实验的重复性和可靠性的一种方法。

The experiments proved the degree of stability reached 0.28μm and the definition of repetitiveness reached 1.376μm.

做出了实验样机，并进行了相关实验，实验结果表明，测量稳定度达到0.28μm，重复性精确度1.376μm，达到了良好的指标水平。

After finishing holistic analyses, and considering the specific and relative research on database technique"s application in the remote structural collaborative experiment, this thesis explores and discusses that the proposed database organization scheme can promote the efficiency of the data"s reposting in the Remote Structural Collaborative Experiment, the efficiency of the remote data exchange, and puts out the improving design compared with the NCREE system, that is to use middleware to realize the separation of the experimental process and DBMS and to set up buffer pool to solve the problems, such as to solve network replacement by getting back the experiment.

在完成了整体分析设计之后，针对数据库技术在远程结构协同实验中的应用作了具体的相关研究，探讨了本文提出的数据库组织方案在远程协同实验中可以提高数据入库效率以及远程数据交换效率以及对比NCREE系统设计提出了改进的设计思想，即采用中间件以实现试验进程与DBMS分离以及设立缓冲池以解决网络复位而要恢复试验等问题，并且还研究了在协同实验中分析中的常用数值积分算法，并着重探讨分析了算子分裂算法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。