试验

In this paper, the author describes a new dynamic termination method based on sequential life testing and failure termination.

为解决这一问题，提出了寿命试验的动态截尾方法，利用该方法研究寿命服从指数型分布产品的可靠性试验，提出了试验动态截尾的数据处理模型及判据。

Falsework fastening the limit of ultra-high capacity can be directly obtained by experiment, but because more and stent Ligan higher, test equipment for the requirements of higher test very difficult.

扣件式超高模板支架的极限承载力通过试验可直接获得，但由于立杆较多且支架较高，试验对仪器设备的要求较高，试验难度很大。

This experiment on the fermentation of multiple water samples for coliform determination of three phases: the beginning of the fermentation test, flat panel to verify the separation and recovery fermentation, fermentation of the final restoration coliform test there exist, then in accordance with the beginning of the fermentation tube tests positive the greatest possible number of investigations the number of coliforms coliform report the number of keys.

本实验中阐述的多管发酵法对水样中大肠菌群的测定包括三个阶段：初发酵试验，平板分离和复发酵验证，经最后复发酵试验验证实有大肠菌群存在后，再根据初发酵试验的阳性管数查大肠菌群最大可能数检索表报告大肠菌群数。

We provide analysis on the principle of SISR, illustrate errors in real-world measurements, and demonstrate a working SISR implementation in field experiments on a test bed of 37 wireless nodes, as well as show the superior performance of SISR in simulation with a larger number of nodes.

我们分析了 SISR 的原理，举例说明在现实测量中的错误，证明了一个在真实环境中的野外现场试验，这个试验是 SISR 实现的，该试验含有37个无线节点，显示了在含有大量节点的大规模网络中 SISR 的高级特性。

The modal tests of PCB and PCB assembly (free boundary condition and fixed boundary condition) were carried out. The equivalent elastic modulus and damping parameters of PCB can be gained, and the fixed boundary condition of finite element model was also determined. These will help to the following work.Second, drop impact tests of three different heights were carried out. Strains and acceleration responses of PCB were measured. Failed BGA packages of different test conditions were dyeing, and cross section analysis of failed solder joints was conducted.

针对JEDEC标准试件的局限性，提出了设计便于统计学研究焊点可靠性的试验试件的构想，利用有限元模态分析方法确定并验证了用圆形PCB组件替代JEDEC标准试件的可行性；通过一系列模态试验和有限元模态分析，确定了圆形PCB组件的相关试验参数，这不仅为跌落碰撞下PCB组件有限元模拟确定了较为合理准确的有限元模型，而且为正确地评价跌落碰撞下PCB组件的可靠性问题奠定了基础。2。

The modal tests of PCB and PCB assembly (free boundary condition and fixed boundary condition) were carried out. The equivalent elastic modulus and damping parameters of PCB can be gained, and the fixed boundary condition of finite element model was also determined. These will help to the following work. Second, drop impact tests of three different heights were carried out. Strains and acceleration responses of PCB were measured. Failed BGA packages of different test conditions were dyeing, and cross section analysis of failed solder joints was conducted. It was found in our drop tests that the root cause of lead-free solder joints under drop impact was the combined effect of mechanical shock and PCB bending vibration.

针对JEDEC标准试件的局限性，提出了设计便于统计学研究焊点可靠性的试验试件的构想，利用有限元模态分析方法确定并验证了用圆形PCB组件替代JEDEC标准试件的可行性；通过一系列模态试验和有限元模态分析，确定了圆形PCB组件的相关试验参数，这不仅为跌落碰撞下PCB组件有限元模拟确定了较为合理准确的有限元模型，而且为正确地评价跌落碰撞下PCB组件的可靠性问题奠定了基础。

In the test model, a new type joint connection of one-way hinge is put forward for achieving pure-hinge connection; In the shape forming test, because of the little post-tensioning forces, a new type loading method of twisting nut for drawing wire is put forward in stead of jack tensioning for solving the questions, such as super-tensioning and the nonuniform rate of loading; In the loadtest, a new type vertical loading system of multiple-point fixed pulley is put forward for solving the questions, such as more loading points and larger vertical force at one loading point.

试验模型中，为了实现纯铰接连接，提出了一种新型的单向铰节点连接形式；成形试验中，由于后张拉力较小，提出了一种新型拧螺母抽钢丝的加载方法，很好的解决了千斤顶易超张拉和加载速率不均匀等问题；承载力试验中，为了解决加载点较多、单点加载较大的问题，提出了一种新型多点定滑轮竖向加载系统。

In the test model, a new type joint connection of one-way hinge is put forward for achieving pure-hinge connection; In the shape forming test, because of the little post-tensioning forces, a new type loading method of twisting nut for drawing wire is put forward in stead of jack tensioning for solving the questions, such as super-tensioning and the nonuniform rate of loading; In the load test, a new type vertical loading system of multiple-point fixed pulley is put forward for solving the questions, such as more loading points and larger vertical force at one loading point.

试验模型中，为了实现纯铰接连接，提出了一种新型的单向铰节点连接形式；成形试验中，由于后张拉力较小，提出了一种新型拧螺母抽钢丝的加载方法，很好的解决了千斤顶易超张拉和加载速率不均匀等问题；承载力试验中，为了解决加载点较多、单点加载较大的问题，提出了一种新型多点定滑轮竖向加载系统。

The ignition and its flame spreading test system of the modular charges in the natural environment is built up, a number of ignition and its propagation methods are simulated, the characteristic parameters of the system in the natural environment are obtained.

本文针对刚性组合装药的点传火技术进行了一些基础性试验研究和理论分析，建立了自然环境下刚性组合装药的点传火试验系统，并对多种点传火方案进行了模拟试验，获得了点传火系统在自然环境下的重要性能参数。

Suggesting: once the sample has been used for the flash test, new sample should be taken for next flash test.

注： 试样一旦进行过闪火试验，该试验就应结束。随后的每个试验都应采用新取的试样。

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。