反复试验

Specimens of 16 unbonded prestressed concrete beams under low cyclic loading were tested.

完成了16根无粘结预应力混凝土梁的低周反复荷载试验。

Based on the contrast experiments of six full-scale non-seismic interior frames joints under low reversed cyclic load,consisting of two strengthened by Gluing Steels,two strengthened by CFRP and two unstrengthened,Contrast analyses were presented including the failure mode,hysteretic loop,and the stress of beam and column s bars,concrete,gluing steels and CFRP.

通过6个足尺框架中节点(2个粘钢加固，2个碳纤维布加固，2个未加固)在低周反复荷载作用下对比试验，对比分析了节点区破坏特性和滞回曲线，以及节点区梁柱纵筋、混凝土、钢板和碳纤维布的应力水平。

Qinghai Plateau Antelope Bee Industry limited company carries on repeatedly tests many times with Haibei State Agricultural center of Qinghai and Guangzhou food development Main Corporation ,through scientific means and modern production technology ,using the whole barley produced highland barley flour noodles ,Has crisply ,soft is strong ,slides ,feeling in the mouth good characteristic ,And broke through the former traditional processing craft ,enabled it to achieve could use the mechanized large scale production the level .

青海高原羚蜂业有限公司和海北藏族自治州农科所、广州食品发展总公司经多次反复研究试验，通过科学手段和现代生产工艺，采用全青稞面粉制作的青稞面条，具有爽、软、韧、滑、口感良好的特性，并突破了以往传统的加工工艺，使之达到了用机械化大规模生产的水平。

The affecting factors of removal of arsenate As(Ⅴ by bone char were studied in batch and column experiments. The results show that the performance of bone char adsorbing As from drinking water is stable after adsorption—desorption—regeneration—re-adsorption cycles.

摘 要：采用骨炭作吸附剂，通过静态和动态吸附试验，研究饮用水中砷去除的效果及其影响因素，以及骨炭反复吸附—解吸—再生—再吸附后骨炭性能的稳定性。

The mechanical performance of garbage is uncertain, now there isnt any thesis about garbage and the load of garbage to box of compressed garbage truck.

本文经反复研究试验给出了车箱内垃圾载荷的数学表达，并通过有限元分析结果和实验数据的比较验证并完善了这些数学表达的合理性。

Both monotonic axial compressive and axially loaded cyclic tests have been carried out on the steel box brace used in New CCTV Building to investigate the effect of assembling welds including full penetration and partial penetration on the structural behavior of the brace.

为考察全熔透和部分熔透两种组装焊缝形式对箱形截面钢支撑受力性能的影响，本文对中央电视台新台址建设工程中的箱形截面支撑进行了单调受压、轴向反复拉压试验；同时，采用ABAQUS有限元软件实现了对部分熔透试件未熔透处的接触模拟和滞回性能模拟。

Experimental results of new type joints between the column and the steel beam of concrete-filled rectangular steel tubular under reversed cyclic loads are presented. The earthquake resistant capacity of the joint is influenced by infilled concrete, stiffener length and relative dimensions of column and beam.

介绍了新型方钢管混凝土柱与钢梁节点在低周反复荷载作用下的试验结果，分析了内填混凝土、加劲肋长度和梁柱相对尺寸等对节点抗震性能的影响。

In order to investigate the behaviors of composite frame composed of steel beams and steel concrete columns with angle lacings,the pseudo-static tests and pseudo-dynamic carthquake response tests of one third scale two-bay three-story composite frame,conducted as equivalent single degree of freedom sys- tem have been carried out.

为研究钢梁和角钢骨架混凝土柱组成的框架在荷载作用下的工作性能，进行了一榀1/3比例两跨三层S梁-SC柱组合框架模型在低周反复荷载作用和使用等效单自山度体系输入实际地震加速度记录两种加荷方式下的试验。

In this paper,using mild steel plate have stable hysteresis under loading and unloading repeated cycles,designed a U shape mild steel plate damper,an hysteresis loop and analytical model was carried out by experimental test At last,this damper is .

振动控制是结构抗震防灾的一种积极有效手段，目前对于大跨空间结构的振动控制技术不是很成熟，利用软钢板在反复循环荷载作用下具有稳定的滞回特性，设计了U形软钢板阻尼器，通过试验得出该阻尼器的滞回曲线，建立了该阻尼器分析模型。

The results of this experiment were different from previous study which suggests that the study on plant chemical defense in large geography scale is difficult and the results may be affected by the background of seedlings and experimental animals and the measured features. So that, more experiments should be carried on in the future.

本文的试验结果与过去的相关研究结果有一定差异，说明大地理范围的植物化学防护研究并不简单，其结果可能受种前的遗传背景、实验动物背景、所选的观测指标等诸多因素影响，因此需要进一步的反复实验。

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。