研究试验

The relationships between welding pool width, wire extension and welding parameters including welding current duty ratio, base current, peak current, welding speed and wire-feeding speed were studied. Through large numbers of welding experiments, aluminum alloy pulsed MIG welding dynamic process were identified by the curve fitting method, and the mathematical models between welding current duty ratio, base current, welding speed, wire-feeding speed and wire extension were obtained, succeeding the model between the above parameters and weld pool width.

介绍了铝合金MIG焊焊接电流占空比、基值电流、峰值电流、焊接速度、送丝速度对熔宽的影响规律，并在其基础上，通过平板堆焊试验研究了这些参数对焊接干伸长的影响规律；在铝合金机器人脉冲MIG焊平板堆焊过程各焊接参数与正面熔宽之间的传递函数的基础上，采用铝合金平板堆焊阶跃试验，利用曲线拟合法辨识了铝合金机器人脉冲MIG焊动态过程传递函数，建立了焊接电流占空比、基值电流、焊接速度、送丝速度与焊接干伸长之间的对象数学模型。

In the single factor experiment ,the authors tested the inoculation, the temperature, the Bx and the fermentation time towards the wine ferment peculiarity's affect and the optimum fermenting technical condition were determined .

以皇冠梨为原料，分别对接种量、发酵温度、糖度及发酵时间等四个因素对皇冠梨果酒发酵特性的影响作了试验研究。然后采用L9（34）正交组合试验设计，确定出了皇冠梨果酒发酵工艺条件。

In view of the current situation that sand is short of supply as well as in poor quality in Beijing, the article analyzes the effects of the main technology index of the machine-made sand on the quality of the ready-mixed pumped concrete.

针对目前北京建筑用砂短缺、质次的现状，本文对机制砂的主要技术指标对预拌泵送混凝土的影响进行了试验分析，试验研究了机制砂对预拌泵送混凝土的和易性与强度的影响。

In view of the current situation that sand is short of supply as well as in poor quality in Beijing, the article analyzes the effects of the main technology index of the machine-made sand on the quality of the ready-mixed pumped concrete.

针对目前北京建筑用砂短缺、质次的现状，本文对机制沙的主要技术指标对预拌泵送混凝土的影响进行了试验分析，试验研究了机制沙对预拌泵送混凝土的和易性与强度的影响。

In view of the current situation that sand is short of supply as well as in poor quality in Beijing, the article analyzes the effects of the main technology index of the machine-made sand on the quality of the ready-mixed pumped concrete.

针对目前北京建筑用砂短缺、质次的现状，本文对机制打砂机的主要技术指标对预拌泵送混凝土的影响进行了试验分析，试验研究了机制打砂机对预拌泵送混凝土的和易性与强度的影响。

In order to prevent wheat stem lodging and to fertilize precisely, the experiments on the influence of phosphate and potash fertilizers on mechanical properties of wheat stem were performed with Zhengzhou-wheat 9023 as an object. Mechanical properties (such as flexural strength and flexural rigidity) of second base inter-node were measured by six treatments at five growth stages of wheat, which were jointing stage, booting stage, flowering stage, grain-filling stage and maturity stage. Nonmetallic material testing machine was used in the experiments.

为了对小麦精准施肥，提高小麦的抗倒伏能力，该文以郑麦9023为研究对象，磷钾肥配施共6个处理，分别在小麦拔节期、孕穗期、扬花期、灌浆期、成熟期等5个生长期，利用非金属材料万能试验机，对去鞘茎秆作3点弯曲试验，测试茎秆基部第2节间的弯曲强度和抗弯刚度。

A new experimental method for volumetric strain measurement of polyurethane foam materials was put forward by utilizing soil tri-axial compressive device.

利用土壤的三轴压缩试验装置，通过试验方法的改进，提出了一种体应变测定和修正的方法，对硬质聚氨酯泡沫材料的静水压力特性进行了研究，得到了一些有价值的数据和结论。

Laboratory investigations on the flashover performances of polluted five types of typical porcelain and glass insulators were carried out in the climate chamber. Based on the test results, this paper analyzes and calculates the flashover voltage, the voltage gradient and the valid creepage distance of the five types of insulators.

为此在人工雾室中对5种典型结构的瓷和玻璃绝缘子的污闪特性进行了试验研究，根据试验结果分析和计算了5种典型绝缘子的闪络电压、闪络电压梯度、有效爬电系数。

Firstly in the paper the research of hydraulic characters and the optimize of structure have being carried out on the four bigger design schemes of permanent internal dissipation discharge tunnel reconstructed from the right banks diversion tunnel of Gongboxia Power Station with a method of theoretical analysis combined with test comparisons. On this basis , two form swirling flow internal dissipation schemes, vertical and horizontal axis are recommended to the construction unit of the station as the schemes to be selected next.

本文采取理论分析与试验比较相结合的方法，首先对黄河公伯峡水电站右岸导流洞改建为永久式内消能泄洪洞的四个较大设计方案进行了水力特性的试验研究与体型优化，在此基础上，向建设单位分别提供了竖井旋流内消能的推荐方案与水平旋流内消能的推荐方案。

The experimental robots,(which don''t do anything else except make copies of themselves,) are powered (through contacts on the surface of the table) and transfer data through their faces.

美国日前公布了的一项试验研究成果：4个试验者戴上布满电极的&思考帽子&后，可以运用他们的思想来直接控制电脑。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。